Search Results
Products are chosen independently by our editors. Purchases made through our links may earn us a commission.

BEST MASTER LOCK LOCKS OF 2026

Updated
Updated
BEST BANG FOR THE BUCK
Master Lock 1500T
Master Lock
1500T
Combination Lock
Master Lock 1500T is a standard dial combination lock suitable for lockers, school, and gym use. It features a hardened steel shackle and anti-shim technology.
Check Price
Check price at Amazon
Pros & Cons
PROS
  • Convenient combination system
  • Strong and durable
  • Anti-shim protection
CONS
  • Not suitable for heavy-duty use
  • Limited to three-digit combinations
Master Lock M175XDLF
Master Lock
M175XDLF
Outdoor Padlock
Master Lock M175XDLF is a heavy-duty outdoor combination lock with a weather-resistant body and a shrouded shackle for maximum security.
Check Price
Check price at Amazon
Pros & Cons
PROS
  • Weather-resistant design
  • High security features
  • Easy to set combination
CONS
  • Combination can be forgotten
  • Bulkier than standard padlocks
Master Lock 3KALF-4
Master Lock
3KALF-4
Keyed Alike Padlocks
Master Lock 3KALF-4 is a set of four keyed alike laminated steel padlocks, ideal for securing multiple locations with a single key.
Check Price
Check price at Amazon
Pros & Cons
PROS
  • Convenient single key access
  • Strong and durable
  • Multiple locks in one set
CONS
  • Keys can be lost
  • Not ideal for high-security needs
Master Lock 4401DLH
Master Lock
4401DLH
Bluetooth Padlock
Master Lock 4401DLH is a smart Bluetooth padlock with app control, ideal for tech-savvy users seeking advanced security features.
Check Price
Check price at Amazon
Pros & Cons
PROS
  • High-tech security features
  • Convenient app control
  • Durable and strong
CONS
  • Requires smartphone and app
  • Battery needs periodic replacement
BEST OF THE BEST
Master Lock 140Q
Indoor Keyed Padlock
Material: Solid brass
Shackle Material: Hardened steel
Shackle Diameter: 1/4 inch
Number of Pins: 4

The Master Lock 140Q Indoor Keyed Padlock is a premium security solution for those seeking reliable protection for their belongings. Constructed with a durable solid brass body, this padlock is designed to withstand tampering and harsh indoor environments.

The hardened steel shackle adds an extra layer of security by resisting cutting and sawing. The dual locking levers provide additional resistance against prying and hammering. Ideal for securing lockers, cabinets, and toolboxes, the Master Lock 140Q offers peace of mind with its robust construction and reliable performance.

PROS
  • Sturdy construction
  • High security features
  • Compact design
CONS
  • Indoor use only
  • Limited color options
BEST BANG FOR THE BUCK
Master Lock 1500T
Combination Lock
Shackle Material: Hardened steel
Shackle Diameter: 1/4 inch
Body Material: Metal
Locking Mechanism: Combination dial

The Master Lock 1500T Combination Lock is a reliable and easy-to-use security solution for daily use in schools, gyms, and workplaces. With its classic dial combination system, users can quickly and easily set their own combination for added convenience.

The hardened steel shackle and anti-shim technology offer robust protection against cutting and tampering, making it a trusted choice for securing personal items. The lock's durable metal body ensures long-lasting performance, while the anti-shim locking mechanism prevents unauthorized access, ensuring that your belongings remain safe and secure.

PROS
  • Convenient combination system
  • Strong and durable
  • Anti-shim protection
CONS
  • Not suitable for heavy-duty use
  • Limited to three-digit combinations
Master Lock M175XDLF
Outdoor Padlock
Shackle Material: Hardened steel
Shackle Diameter: 5/16 inch
Body Material: Zinc
Locking Mechanism: Combination

The Master Lock M175XDLF Outdoor Padlock is designed to provide high security in outdoor environments. Built with a tough weather-resistant body, this padlock can withstand harsh weather conditions, making it ideal for gates, sheds, and garages.

The shrouded shackle offers additional protection against cutting and sawing, while the 4-digit combination allows users to set their own code for added convenience. With its robust construction and advanced security features, the Master Lock M175XDLF ensures that your outdoor belongings remain safe and secure.

PROS
  • Weather-resistant design
  • High security features
  • Easy to set combination
CONS
  • Combination can be forgotten
  • Bulkier than standard padlocks
Master Lock 3KALF-4
Keyed Alike Padlocks
Shackle Material: Hardened steel
Shackle Diameter: 9/32 inch
Body Material: Laminated steel
Number of Padlocks: 4

The Master Lock 3KALF-4 Keyed Alike Padlocks set is perfect for those who need to secure multiple locations with the convenience of a single key. Each padlock in this set is constructed with a laminated steel body for superior strength and durability.

The hardened steel shackle provides extra cut resistance, while the dual locking levers offer additional protection against prying and hammering. Ideal for securing gates, sheds, and storage units, these keyed alike padlocks provide a reliable and convenient security solution for both residential and commercial use.

PROS
  • Convenient single key access
  • Strong and durable
  • Multiple locks in one set
CONS
  • Keys can be lost
  • Not ideal for high-security needs
Master Lock 4401DLH
Bluetooth Padlock
Shackle Material: Boron carbide
Shackle Diameter: 11/32 inch
Body Material: Zinc
Battery Type: CR2

The Master Lock 4401DLH Bluetooth Padlock is a state-of-the-art security solution designed for the modern user. Featuring advanced Bluetooth technology, this smart padlock can be controlled via a smartphone app, allowing users to lock and unlock the padlock without the need for a physical key.

The app also provides features such as tamper alerts and temporary access sharing, making it ideal for securing lockers, gates, and storage units. With its durable construction and high-tech features, the Master Lock 4401DLH offers a combination of convenience and security that is hard to beat.

PROS
  • High-tech security features
  • Convenient app control
  • Durable and strong
CONS
  • Requires smartphone and app
  • Battery needs periodic replacement

How our picks compare

SpecificationMaster Lock 140QMaster Lock 1500TMaster Lock M175XDLFMaster Lock 3KALF-4Master Lock 4401DLH
MaterialSolid brass----
Shackle MaterialHardened steelHardened steelHardened steelHardened steelBoron carbide
Shackle Diameter1/4 inch1/4 inch5/16 inch9/32 inch11/32 inch
Number of Pins4----
Body Material-MetalZincLaminated steelZinc
Locking Mechanism-Combination dialCombination--
Number of Padlocks---4-
Battery Type----CR2