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MasterLock

Master Lock is a leading brand in security products, renowned for durable padlocks, bike locks, cables, chains, and U-locks designed for home improvement, outdoor gear, and cycling security.

48 products Updated March 4, 2026

MasterLock Products (48)

1
Prime

Master Lock 70DCC Steel Bike Lock Cable, 30 ft x 3/8 in Vinyl Coated Braided Steel with Looped Ends for Bikes, Grills, Ladders

MasterLock
9.9
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional length for wrapping around large objects
  • Durable braided steel for reliable strength
  • Protective vinyl prevents damage to bikes and property
  • Flexible and easy to handle
  • Lifetime warranty from trusted brand

Cons

  • Requires separate padlock for full security
  • Length may be excessive for small items
  • Bulkier to carry when coiled
2
Prime

Master Lock 1465DAT Stainless Steel Trailer Hitch Pin - 5/8" Fits 2" Receivers, Class III/IV 10,000 lb Load Rating

MasterLock
9.9
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Superior corrosion resistance extends lifespan in wet conditions
  • Easy insertion thanks to tapered design
  • High 10,000 lb load rating handles demanding towing
  • Durable stainless steel construction
  • Precise fit for 5/8-inch receivers

Cons

  • Includes only one pin per package
  • Limited to standard 5/8-inch receivers
  • Barrel head style may not appeal to clip-preferring users
3
-14%
Master Lock 146D Pink Covered Aluminum Keyed Padlock with Steel Shackle - Gym & School Locker Lock, 1-9/16in Body
Prime

Master Lock 146D Pink Covered Aluminum Keyed Padlock with Steel Shackle - Gym & School Locker Lock, 1-9/16in Body

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Corrosion-resistant construction endures harsh environments
  • Strong steel shackle boosts cut resistance
  • Pick and pry resistant mechanism enhances security
  • Matching key heads simplify identification and use
  • Trusted brand with limited lifetime warranty

Cons

  • Short 7/8in shackle may not fit thicker hasps
  • Provides basic rather than high-security protection
  • Small size limits use for larger applications
4

Master Lock 389DAT Universal Trailer Coupler Locks - Fits 1-7/8", 2", 2-5/16" Couplers, 4 Pack Rust-Resistant Theft Protection

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Fits most common coupler sizes for broad compatibility
  • Durable rust-resistant build withstands harsh weather
  • Bright color enhances theft deterrence
  • Easy to use with straightforward lock mechanism
  • High customer satisfaction from extensive real-world use

Cons

  • Locks have different key numbers, requiring separate keys for each
  • Not available keyed-alike like similar models
  • Bright red color may not match all trailer aesthetics
5

Master Lock 389DAT Trailer Coupler Lock - Universal Fit for 1-7/8in, 2in, 2-5/16in Couplers, Pick & Pry Resistant

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Fits multiple coupler sizes for broad compatibility
  • Strong resistance to common break-in methods
  • Weatherproof design withstands harsh conditions
  • Quick and hassle-free to apply or remove
  • High-visibility color enhances theft deterrence

Cons

  • Bright red color may draw unwanted attention
  • Requires precise coupler size verification for perfect fit
  • Key access could be challenging in low light
6
Prime

Master Lock 40DPF Stainless Steel Discus Padlock - 2-3/4in Wide, Weatherproof Shackle for Gates, Sheds & Garages

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional corrosion resistance for outdoor durability
  • Strong anti-cut and anti-pry features boost security
  • Wide body provides maximum strength without bulk
  • Easy to use with standard keys for everyday access

Cons

  • Short shackle may not fit thicker hasps or chains
  • Keyed design requires key management to avoid lockouts
7
Prime

Master Lock M736XKAD Chrome Puck Hidden Shackle Padlock with 9-1/16" Steel Hasp - Heavy Duty Lock for Trucks, Trailers, Vans

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Eliminates shackle exposure for ultimate cut resistance
  • Exceptional build quality with solid steel construction
  • High pick resistance enhances security
  • Generous hasp length fits most applications
  • Includes two keys and key-retaining safeguard

Cons

  • Carriage bolts for installation not included
  • Requires precise door measurements for proper fit
  • Heavier design may need sturdy mounting surface
8
Prime

Master Lock 40TRI 3-Pack Shrouded Stainless Steel Discus Padlocks - 2-3/4" Body, Bolt Cutter Resistant, Keyed Alike

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Maximum corrosion resistance for indoor/outdoor use
  • 4-pin cylinder prevents picking
  • Three locks with just two keys for simplicity
  • Limited Lifetime Warranty from a trusted brand
  • Ideal for storage locks on garages and sheds

Cons

  • Short 5/8-inch shackle may not fit thicker hasps
  • Only two keys included for three locks
  • Requires measuring hasp clearance for proper fit
9
Prime

Master Lock 8418D Python Adjustable Bike Cable Lock, 6ft Keyed Braided Steel, Weatherproof Vinyl for Bikes, Trail Cams & Gear

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Highly flexible braided steel for versatile securing options
  • Rust-proof and scratch-resistant for harsh weather conditions
  • Adjustable tension holds cable tight at any length
  • Integrated keyed lock provides quick, secure access

Cons

  • Cable locks like this may be vulnerable to bolt cutters in high-risk areas
  • Keyed mechanism requires carrying keys, unlike combination locks
  • Longer length can feel bulky when coiled for storage
10
Prime

Master Lock Python 8413DPF Adjustable Cable Lock with Key, 6ft x 3/8in Braided Steel for Bikes, Trail Cameras, Kayaks & Tools

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional strength and flexibility from braided steel design
  • Rust-resistant and weatherproof for reliable outdoor use
  • Adjustable length with patented lock for perfect fit every time
  • Rekeyable for enhanced security and convenience
  • Versatile for bikes, trail cams, kayaks, and tools

Cons

  • Cable design may be vulnerable to heavy-duty bolt cutters compared to U-locks
  • Requires carrying keys, lacking the convenience of combination locks
  • Fixed 6-foot length might be excessive for smaller items
11
Prime

Master Lock 527D Adjustable Shackle Padlock with Key - Black Vinyl Covered, Cut-Resistant Hardened Steel, Pry-Proof for Lockers & Backpacks

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Highly versatile shackle length adjustment for diverse applications
  • Scratch- and corrosion-resistant covering preserves surfaces
  • Enhanced security with pick-resistant cylinder and pry-proof levers
  • Compact 2-inch body with strong 5/16-inch shackle diameter
  • Includes two keys for immediate backup access

Cons

  • Adjustable shackle mechanism may loosen with frequent adjustments
  • Best for medium-security needs, not extreme high-security environments
  • Vinyl covering can wear under prolonged heavy abrasion
12

Master Lock 5400EC Key Lock Box - Secure Outdoor Combination Lockbox for House Keys, Resettable 4-Digit Code, Weatherproof Black

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Holds multiple keys with plenty of interior space
  • Easy custom combination setup for personalized use
  • Durable and weather-resistant for long-term outdoor reliability
  • Secure shackle design fits standard doorknobs securely
  • Vinyl cover adds door protection

Cons

  • Shackle fits most but not all oversized or non-standard doorknobs
  • Limited to standard 2-inch keys only
  • Combination dials may require practice to adjust precisely
13
Prime

Master Lock 141DLF Black Covered Aluminum Padlock with Key - Long Shackle Gym Locker Lock for Gates, Fences, Toolboxes

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional corrosion resistance for harsh weather
  • Strong cut-resistant shackle enhances theft protection
  • Pick and pry resistance boosts overall security
  • Long shackle provides application flexibility
  • Durable construction backed by lifetime warranty

Cons

  • Aluminum body may not suit ultra-heavy-duty industrial needs
  • Only two keys included, requiring duplicates for multiple users
  • Shackle length might be excessive for very tight spaces
14
Prime

Master Lock Magnum M115XTLF Heavy Duty Outdoor Padlock 2-Pack: Weatherproof, Cut-Resistant Shackle for Gates, Fences, Sheds

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional durability from boron-carbide shackle and laminated steel body
  • Superior weatherproofing for reliable outdoor performance
  • High pick and pry resistance with advanced cylinder and bearings
  • Versatile extended shackle fits various applications
  • Includes two locks and universal keys for immediate use

Cons

  • Extended shackle may not suit very tight clearance applications
  • Requires proper key management since both keys open all locks
  • Overbuilt for indoor or light-duty uses, adding unnecessary bulk
15
Prime

Master Lock 8417D Python Adjustable Bike Cable Lock, 6ft Braided Steel with Key, Weather-Resistant Vinyl Coating for Bikes & Gear

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional flexibility and strength from 3/16in braided steel
  • Adjustable length provides perfect fit for various gear sizes
  • Weather and scratch-resistant for all-season durability
  • Includes two keys for convenient access
  • High pick resistance enhances security

Cons

  • Cable vulnerable to cutting with heavy bolt cutters in high-risk areas
  • Keyed mechanism requires carrying keys, no combo option
  • Best as secondary lock, not standalone for maximum theft protection
16
Prime

Master Lock 140D Solid Brass Padlock with Key - Cut-Resistant Shackle, Pick & Pry Proof, Corrosion Resistant Lock

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional durability from solid brass and hardened steel construction
  • High security with pick, pry, and cut resistance
  • Versatile for everyday uses like bags, boxes, and cabinets
  • Corrosion-resistant for harsh environments
  • Trusted brand with proven reliability

Cons

  • Shackle length of 7/8in may not fit thicker gates or hasps
  • Single keying means all locks use the same key, limiting flexibility
  • Basic design lacks advanced features like rekeying
17
Prime

Master Lock 379ATPY Black Universal Trailer Hitch Lock - Fits 1-7/8in, 2in & 2-5/16in Couplers for RVs, Horse & Boat Trailers

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Versatile sizing fits most standard trailer couplers
  • High-security mechanism deters common break-in attempts
  • Durable zinc build withstands harsh weather and road conditions
  • Easy to install and remove with provided keys
  • Trusted brand reliability backed by strong user ratings

Cons

  • Fits 'most' but not all 2-5/16 in. couplers precisely
  • Only two keys included, requiring careful management
  • Black finish may show wear or dirt over time
18
Prime

Master Lock 8127TRI 3-Pack Keyed-Alike Bike Cable Locks, 6ft Braided Steel, Color-Coded Blue/Green/Red for Secure Biking

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Durable 8mm braided steel construction resists cutting
  • Three locks in one keyed-alike pack with two keys included
  • Color-coded for simple identification and organization
  • Long 6ft cables fit most securing scenarios
  • Vinyl coating prevents damage to locked items

Cons

  • Best as secondary security, not standalone for high-risk areas
  • Keyed system vulnerable if both keys are lost
  • Thicker cables can feel bulky for compact storage
19
-29%
Master Lock Door Blocker 2-Pack: Reinforcing Security Stopper, Child Pet Proof, Easy DIY Install
Prime

Master Lock Door Blocker 2-Pack: Reinforcing Security Stopper, Child Pet Proof, Easy DIY Install

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Easy DIY installation without professional help
  • Intuitive operation visible at a glance
  • Versatile for both security and child/pet safety
  • High-quality reinforced construction
  • Compatible with most inward-opening doors

Cons

  • Requires drilling for permanent installation
  • Only works on inward-opening doors
  • Not easily removable without tools
20
Prime

Master Lock 8364DCC 5ft Keyed Cable Bike Lock - Cut-Resistant Braided Steel, Pick-Proof Lock, Flexible Security

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional cut and saw resistance from braided steel construction
  • Pick-proof keyed mechanism enhances security
  • Flexible and self-coiling for effortless handling
  • Vinyl coating prevents bike scratches
  • Weatherproof build for long-term reliability

Cons

  • Cable may not withstand heavy bolt cutters from determined thieves
  • Requires managing a physical key for locking
  • Less robust than U-locks for high-risk urban areas
21
Prime

Master Lock 3ft x 8mm Hardened Steel Chain with Resettable Combination Lock - Cut-Resistant Bike Security

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional durability against cutting and sawing
  • Convenient keyless combination security
  • Protective nylon cover prevents surface damage
  • Resettable dials for personalized security
  • Trusted brand with lifetime warranty

Cons

  • 3ft length may be short for larger items
  • Steel construction adds noticeable weight
  • Combination can be tricky to set initially
22
Prime

Master Lock Magnum M115XDLF Heavy Duty Padlock - Weatherproof, Cut-Resistant Shackle for Gates, Fences, Sheds

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional strength and weather resistance for outdoor security
  • Tough-Cut shackle defeats bolt cutters and saws effectively
  • Pick-resistant 4-pin cylinder enhances security
  • Extended shackle offers versatile application flexibility
  • Rustproof construction with lifetime warranty

Cons

  • Only two keys included, limiting spares without duplication
  • Specific shackle dimensions may not fit very narrow hasps
  • Keyed design lacks combo convenience for quick access
23
Prime

Master Lock Magnum M930XKADLH Heavy Duty Solid Steel Padlock - Cut-Resistant Shackle for Gates, Fences, Sheds (2-1/2in Body, 2in Shackle)

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional cut and pry resistance for high-security needs
  • Durable construction withstands harsh outdoor conditions
  • Extended shackle fits thicker gates and doors easily
  • Includes two keys and rekeyable design for convenience
  • Scratch-resistant bumper maintains appearance over time

Cons

  • Keyed mechanism requires managing physical keys
  • Heavier weight due to solid steel build may feel bulky
  • Specific shackle dimensions may not suit very narrow hasps
24
Prime

Master Lock Magnum All-Weather Keyed Alike Padlocks, 1-7/8" Body 1-1/2" Shackle Black 3-Pack for Gates Fences Sheds

MasterLock
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Superior all-weather protection for outdoor durability
  • Keyed alike convenience for multiple locks
  • Hardened shackle and dual bearings enhance security
  • Compact 1-7/8 inch body fits most applications
  • Includes two keys per set for immediate use

Cons

  • 1-1/2 inch shackle may limit clearance on thicker gates
  • Keyed alike means losing one key compromises all locks
  • Rubber cover could show wear after prolonged heavy abuse
25
-11%
Master Lock M40XD 70mm Discus Padlock - Tough-Cut Boron-Carbide Shackle, Max Cut Resistance & Corrosion Proof
Prime

Master Lock M40XD 70mm Discus Padlock - Tough-Cut Boron-Carbide Shackle, Max Cut Resistance & Corrosion Proof

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional cut and pry resistance for superior security
  • Corrosion-resistant build ideal for indoor/outdoor use
  • Pick-resistant cylinder enhances tamper protection
  • Compact discus design fits tight spaces on hasps and gates
  • Lifetime guarantee ensures dependable performance

Cons

  • Short 5/8-inch shackle limits use on thicker hasps
  • Only two keys provided, requiring duplicates for multiple users
  • Heavy-duty build may feel bulky for lightweight applications
26
Prime

Master Lock M40XT Magnum Stainless Steel Discus Padlock, 2-3/4in Wide, 2-Pack Keyed Alike - Weatherproof Theft-Resistant Security

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional corrosion resistance for harsh outdoor environments
  • High-security features like 4-pin cylinder and shrouded body deter thieves effectively
  • Keyed alike setup simplifies managing multiple locks
  • Durable construction withstands years of exposure and attacks
  • Versatile for jobsites, rentals, pools, and storage

Cons

  • Short 5/8in shackle length may not fit thicker gates or chains
  • Key-only operation lacks combination convenience for quick access
  • Heavy-duty build adds noticeable weight for portable use
27
Prime

Master Lock 377KA Trailer Hitch Lock - Fits 1-7/8in, 2in & Most 2-5/16in Couplers - Rustproof, Pick-Resistant Security

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Versatile sizing fits most standard trailer couplers
  • Weatherproof construction withstands harsh conditions
  • High-security mechanism deters common break-in attempts
  • Simple to use with included keys
  • Durable build from trusted brand

Cons

  • Fits only 'most' 2-5/16in couplers, check compatibility
  • Requires carrying keys, risk of loss
  • Aluminum body may not suit extreme heavy-duty needs
28
Prime

Master Lock 2847DAT Stainless Steel Adjustable Trailer Coupler Latch Lock - Durable, Easy Install Security

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional durability for reliable long-term use
  • Straightforward installation and operation
  • Adjustable fit accommodates various coupler sizes
  • Stainless steel build resists corrosion
  • Proven secure latch mechanism

Cons

  • Manufactured in China, which may raise quality concerns for some
  • Basic design lacks advanced anti-pick features
  • Keys may be easy to lose without duplicates
29
-19%
Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock - 15/16" Shackle, Rust-Resistant, Pick-Proof Security
Prime

Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock - 15/16" Shackle, Rust-Resistant, Pick-Proof Security

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional pick resistance from precision pin tumbler
  • Rust and corrosion resistant for extended outdoor use
  • Durable protection against cutting and sawing
  • Solid brass construction for superior strength
  • Ideal fit for standard trailer couplers

Cons

  • Shackle dimensions fit specific coupler sizes only
  • Requires key for operation, no keyless entry
  • May feel bulky on smaller trailers
30
-19%
Master Lock M50XKADCCSEN Magnum Stainless Steel Discus Padlock - 3-1/8in Wide, Max Security Shackle for Sheds, Garages, Gates
Prime

Master Lock M50XKADCCSEN Magnum Stainless Steel Discus Padlock - 3-1/8in Wide, Max Security Shackle for Sheds, Garages, Gates

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional shackle strength resists cutting tools better than standard steel locks
  • High pick resistance from four-pin cylinder enhances overall security
  • Durable, scratch-resistant body maintains look over time
  • Versatile for multiple uses like storage units and moving trucks
  • Includes two keys for immediate convenience

Cons

  • Short 5/8in shackle length limits use on thicker hasps
  • Keyed mechanism requires key management unlike combination locks
  • Shrouded design may not fit all standard padlock eyes
31
Prime

Master Lock 207EC3 Magnetic Key Holder 3-Pack - Rustproof Hide-A-Key, Fits Fobs, Secure Steel Magnet, Discreet Black

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Durable rust-free construction for long-term outdoor use
  • Strong recessed magnet attaches reliably to steel
  • Accommodates keys with fobs for modern vehicles
  • Improved cover design enhances usability
  • Portable and versatile for multiple locations

Cons

  • Magnet only works on steel surfaces, not other metals
  • Plastic build may scratch under heavy abuse
  • Limited capacity for bulky keychains
32
Prime

Master Lock 8320D U-Lock Bike Lock - Hardened Steel Keyed Anti-Theft Security for Bicycles & Gear, Black

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional strength from hardened steel construction
  • User-friendly double-locking for fast secure locking
  • Vinyl cover prevents bike damage
  • Easy-to-carry with included bracket
  • Versatile for bikes and other outdoor equipment

Cons

  • Keyed mechanism requires carrying and managing a key
  • Standard shackle length may not fit extra-thick frames
  • Heavier than cable locks due to steel build
33
Prime

Master Lock 2866DAT Receiver Hitch Lock - 1/2in & 5/8in Swivel Head Pins, Weatherproof for Trailers, RVs & Couplers

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Dual pin sizes provide flexibility for different hitch classes
  • Swivel head and push-to-lock simplify securing and unlocking
  • Weatherproof seal enhances durability in harsh conditions
  • Pick-resistant 4-pin cylinder boosts security
  • Compact 2-3/4in usable length fits most applications

Cons

  • Requires checking compatibility with bike racks or storage accessories
  • Key-based operation lacks keyless convenience
  • Limited to standard receiver tube sizes
34
Prime

Master Lock 1469DAT Stainless Steel Barbell Hitch Pin Lock - 5/8in Receiver Lock for Heavy-Duty Trucks, Weatherproof Security

MasterLock
9.7
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Corrosion-resistant stainless steel build endures tough outdoor use
  • Simple push-to-lock for effortless operation
  • Weather-tight cap prevents dirt and water intrusion
  • Precise fit for heavy-duty tow packages on major truck brands
  • Extended length accommodates deeper receiver applications

Cons

  • Limited to 5/8-inch receivers, not suitable for other sizes
  • Extended shaft designed specifically for heavy-duty trucks, may not fit standard setups
  • Requires key for removal, no keyless unlock option
35
-6%
Master Lock 8143D Combination Bike Cable Lock, 4ft Braided Steel, Keyless Security, Scratch-Resistant Black Vinyl
Prime

Master Lock 8143D Combination Bike Cable Lock, 4ft Braided Steel, Keyless Security, Scratch-Resistant Black Vinyl

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Flexible design for easy wrapping and storage
  • Affordable basic security that deters opportunistic theft
  • Scratch-proof coating protects valuable bike paint
  • Keyless convenience ideal for everyday use
  • Compact and lightweight for portability

Cons

  • Basic security level best as a theft deterrent, not for high-risk areas
  • Braided cable can be cut with heavy tools by determined thieves
  • Preset combination requires careful resetting to avoid easy guessing
36
-6%
Master Lock 8143T Preset Combination Bike Locks, 4ft Braided Steel Cable with Vinyl Coating, Pack of 2 for Bikes & Outdoor Gear
Prime

Master Lock 8143T Preset Combination Bike Locks, 4ft Braided Steel Cable with Vinyl Coating, Pack of 2 for Bikes & Outdoor Gear

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Convenient preset combination security with no keys needed
  • Flexible braided steel with protective coating resists scratches and weather
  • Value pack of two identical locks for multiple uses
  • Compact and easy to carry for everyday bike security
  • High-strength 5/16-inch diameter cable deters casual theft

Cons

  • Basic security level best as a theft deterrent, not for high-risk areas
  • Preset combination cannot be changed, using same code for both locks
  • Cable length may be short for larger bikes or multiple attachment points
37
-24%
Master Lock 8114D 6ft Combination Bike Cable Lock - Set Your Own 4-Digit Code, Braided Steel, Weather-Resistant Vinyl Coating
Prime

Master Lock 8114D 6ft Combination Bike Cable Lock - Set Your Own 4-Digit Code, Braided Steel, Weather-Resistant Vinyl Coating

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Highly flexible cable for easy wrapping and portability
  • Customizable combination eliminates key loss worries
  • Protective coating prevents damage to bike paint
  • Long 6ft length suits larger frames and multiple items
  • Durable braided steel withstands daily outdoor exposure

Cons

  • Offers basic security only, not suitable for high-risk areas
  • Cable may be vulnerable to bolt cutters
  • Length can feel bulky for compact storage
38
Prime

Master Lock M175LFEC2 Gold Heavy Duty Outdoor Combination Padlock, Weatherproof Resettable 4-Digit Locks, Tough-Cut Shackle, 2 Pack

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Tough-Cut shackle 50% harder than steel excels in cutting resistance
  • Hinged dial cover and seals provide excellent weatherproofing
  • One-directional dial works well in low light
  • Set-your-own combination is user-friendly and tool-free
  • Lifetime guarantee backs trusted brand reliability

Cons

  • 4-digit combination requires memorization to avoid lockout
  • Octagonal shackle design may not fit all narrow hasps
  • Heavier build suits heavy-duty use but feels bulky for light applications
39
-14%
Master Lock 8122D 6ft Combination Bike Cable Lock - Set Your Own 4-Digit Code, Flexible Braided Steel, Theft Deterrent
Prime

Master Lock 8122D 6ft Combination Bike Cable Lock - Set Your Own 4-Digit Code, Flexible Braided Steel, Theft Deterrent

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Set-your-own combination eliminates key loss worries
  • Flexible 6 ft. cable accommodates various bike sizes and locks
  • Protective vinyl prevents damage to bike paint
  • Braided steel offers strength with easy handling
  • Proven theft deterrent for low-to-medium risk areas

Cons

  • Basic security not ideal for high-theft urban environments
  • May require periodic combo reset reminders
  • Limited cut resistance compared to heavy-duty U-locks
40
Prime

Master Lock 175LHEC2 Combination Padlocks, Set Your Own 4-Digit Combo, 2-1/4in Extended Shackle for Gates & Sheds, 2 Pack

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Set-your-own combo prevents forgotten codes and enhances convenience
  • Extended shackle fits more applications like wide gates and storage units
  • Cut-resistant hardened steel and solid body offer superior strength
  • Weatherproof design suits demanding outdoor environments
  • Value-packed 2-pack for comprehensive securing needs

Cons

  • Shackle presets to 0-0-0-0, requiring immediate reset for security
  • Combo dialing may need practice for smooth operation
  • Solid build adds slight weight for heavy-duty use
41
Prime

Master Lock STW205GYC Fireproof Waterproof Safe 2.0 cu ft Digital Keypad Black Steel UL Certified

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional fire and water resistance backed by UL and ETL certifications
  • Robust steel construction with advanced anti-pry features
  • Convenient digital access and organized interior for quick use
  • Lifetime warranty for long-term peace of mind

Cons

  • Heavy steel build limits portability without bolting
  • Digital keypad requires battery maintenance
  • Compact interior may not accommodate bulky items
42
Prime

Master Lock M175XDLF Heavy Duty Outdoor Combination Padlock - Weatherproof, Resettable 4-Digit, Tough-Cut Shackle, Brass Finish

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptionally tough shackle resists cutting and sawing
  • Fully weatherproof for harsh outdoor conditions
  • User-resettable combination for personalized security
  • One-directional dial works in low light
  • Strong zinc construction with protective features

Cons

  • Combination mechanism may be slower than keyed locks for quick access
  • Bulkier body might not fit smaller hasps
  • Requires memorizing or recording the code
43
Prime

Master Lock 175DLH Brass Combination Padlock - Set Your Own 4-Digit Code, Extra Long 2-1/4" Shackle for Gates, Sheds & Fences

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Customizable combination prevents key loss worries
  • Extended shackle fits more applications without hassle
  • Weather-resistant construction for long-term outdoor reliability
  • Strong solid body and hardened shackle deter break-ins
  • Lifetime warranty backs quality from trusted brand

Cons

  • Preset to 0-0-0-0 requires immediate reset for security
  • Combination changes need included tool, adding a step
  • Brass body may show wear faster than stainless in harsh conditions
44
-27%
Master Lock 1177D ProSeries Brass Padlock - Resettable 4-Digit Combination, 2-1/4in Wide, Cut-Resistant Shackle for Gates, Fences, Tools
Prime

Master Lock 1177D ProSeries Brass Padlock - Resettable 4-Digit Combination, 2-1/4in Wide, Cut-Resistant Shackle for Gates, Fences, Tools

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Exceptional cut and pry resistance for high-security needs
  • User-friendly resettable combination with no tools required
  • Weatherproof seals extend lifespan in industrial settings
  • Large dials enable easy use in challenging conditions
  • Lifetime guarantee from trusted Master Lock brand

Cons

  • Shrouded shackle limits maximum opening width for thicker items
  • 4-digit code requires memorization without key backup
  • Bulkier industrial build may not suit lightweight residential uses
45
Prime

Master Lock 7116D White Plastic Key Tags, 20-Pack | Durable, Easy-Install Key Organizers

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Highly durable for everyday reliability
  • Easy installation and handling
  • Convenient 20-pack quantity
  • Clear white design for better organization
  • Made in USA for trusted craftsmanship

Cons

  • Plastic material may not suit extreme heavy-duty applications
  • Limited to white color only
  • Some units manufactured in China despite USA origin claim
46
Prime

Master Lock 8126D 6ft x 5/16in Keyed Bike Cable Lock - Braided Steel, Vinyl Coated for Strength & Scratch Protection

MasterLock
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Strong, flexible braided steel cable
  • Scratch-preventing vinyl coating
  • Pick-resistant keyed locking mechanism
  • Versatile for multiple security needs
  • Generous 6ft length with two keys included

Cons

  • Provides only basic security, not for high-risk areas
  • Vinyl coating may wear with heavy use
  • Self-coiling design can feel bulky when stored
47
-5%
Master Lock 1175LHSS ProSeries Brass Resettable Combination Padlock - Heavy Duty Outdoor Lock for Gates, Fences, Construction Sites, 2-1/4in Wide
Prime

Master Lock 1175LHSS ProSeries Brass Resettable Combination Padlock - Heavy Duty Outdoor Lock for Gates, Fences, Construction Sites, 2-1/4in Wide

MasterLock
9.5
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Highly durable in wet, corrosive environments like construction sites
  • User-friendly resettable combo with no special tools needed
  • Operates smoothly even with gloves or in poor visibility
  • Strong anti-cut and anti-pry features enhance security
  • Weatherproof seals protect internals from dust and debris

Cons

  • Bulkier 2-1/4in body may not fit smaller hasps
  • 4-dial combination requires memorization without key backup
  • Initial dial stiffness possible until broken in
48
Pros & Cons

Pros

  • Keyed alike convenience with six total keys
  • Broad compatibility with major coupler brands
  • Heavy-duty 2.4 lb construction for superior strength
  • Advanced locking mechanism thwarts common theft tactics
  • Rust-resistant materials for all-weather durability

Cons

  • Multiple 3-packs may not be keyed alike—order 6-pack for matching sets
  • Heavier weight could feel bulky for lighter-duty users
  • Fits most but not all 2-5/16in couplers precisely

MasterLock Brand Guide

Master Lock stands as a pillar in the world of security solutions, delivering robust products that protect what matters most. Known for their padlocks, hasps, cables, chains, and specialized bike locks, the brand excels in categories like Tools & Home Improvement and Sports & Outdoors, particularly for cyclists seeking reliable protection against theft.

Brand Overview and Legacy

With a focus on innovation and durability, Master Lock has earned a reputation for creating locks that withstand harsh conditions. Their products feature weather-resistant coatings and sturdy construction, making them ideal for everyday use in demanding environments. Whether securing bicycles, trail cameras, or outdoor equipment, Master Lock emphasizes user-friendly designs like keyed-alike systems and adjustable lengths.

What Sets Master Lock Apart

Master Lock products stand out due to their combination of strength and versatility. Many incorporate vinyl coatings for rust resistance, ensuring longevity even in wet or rugged settings. The brand offers options with keys or combinations, catering to different preferences for convenience and security. Their commitment to quality is evident in the thoughtful engineering that balances security with ease of use, appealing to both casual users and serious enthusiasts.

  • Weather-resistant materials for outdoor reliability
  • Adjustable cables in various lengths for flexible applications
  • Keyed-alike packs for managing multiple locks effortlessly
  • U-locks and cables designed specifically for bike security

Product Quality and Reputation

Master Lock's reputation is built on consistent performance across their lineup. Customers value the brand's anti-theft features, such as hardened steel components and preset combinations that simplify access without sacrificing protection. These locks are rigorously tested for real-world scenarios, from urban bike commuting to remote trail setups. The result is a lineup that provides peace of mind, backed by a brand synonymous with trustworthiness in the security industry.

Who Are Master Lock Products Best For?

These products suit a wide audience, including cyclists needing portable security for daily rides, homeowners securing gates and sheds, and outdoor adventurers protecting gear like bikes and cameras. Commuters appreciate the compact U-locks, while families benefit from multi-pack cable options. If you're in the market for reliable deterrence without complexity, Master Lock delivers across the board.

Key Product Categories

Master Lock shines in several essential categories. Explore their offerings in Cables & Chains for heavy-duty hardware solutions perfect for home and industrial use. For cycling enthusiasts, check out Cable Locks, featuring adjustable metal cables ideal for bicycles and equipment. Their U-Locks provide superior shackle strength for high-risk areas. Additional highlights include preset combination cables and multi-color keyed-alike sets, expanding options for personalized security needs.

Popular Product Highlights

Standout items like the Python series offer extended 6-foot lengths with key mechanisms, perfect for wrapping around frames and wheels. Combination models allow password-free access, while twin packs provide value for multiple bikes. U-locks deliver the rigid security preferred by urban riders, complementing softer cable options for layered protection.

FAQ

Are Master Lock bike locks weatherproof?

Yes, many feature vinyl coatings that resist moisture, dirt, and UV exposure, making them suitable for outdoor storage and use in various climates.

What is the difference between cable and U-locks from Master Lock?

Cable locks offer flexibility for wrapping around irregular shapes like bike frames, while U-locks provide hardened shackle strength for maximum cut resistance in high-theft areas.

Can Master Lock products be used for non-bike applications?

Absolutely, their cables and chains secure trail cameras, ladders, gates, and other equipment, extending beyond cycling to general home and outdoor security.

Do they offer keyed-alike options?

Yes, multi-packs like tri-color sets use the same key, simplifying management for users with several locks.

Are combination locks from Master Lock resettable?

Many models allow users to set their own combinations, enhancing convenience and personalization.