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Master Lock Manuals & User Guides

Master Lock is a global leader in security solutions, manufacturing authentic, enduring padlocks, combination locks, safes, and safety products for consumer and industrial use.

Tip: include the full model number printed on your Master Lock label for the best match.

About Master Lock manuals on Manuals.plus

Master Lock is recognized around the world as the authentic, enduring name in padlocks and security products. Since its founding, the company has established a reputation for strength and quality, offering a broad portfolio of security solutions. Their product line includes the iconic laminated steel padlocks, dial combination locks, TSA-accepted luggage locks, and heavy-duty outdoor security devices like the Magnum series.

Beyond traditional mechanical locks, Master Lock innovates with electronic and bluetooth-enabled security devices, key storage lock boxes, and comprehensive safety lockout/tagout solutions for industrial environments. Whether securing a gym locker, a backyard shed, or a commercial facility, Master Lock provides durable products designed to provide peace of mind.

Master Lock manuals

Latest manuals from manuals+ curated for this brand.

Master Lock 8114D Combination Cable Lock Instructions

August 13, 2025
Master Lock 8114D Combination Cable Lock Simple to Set Your Own Combination Specifications Feature Details Combination Dials 4-digit combination Knob Rotation 90 degrees clockwise and counterclockwise SIMPLE TO SET YOUR…

Master Lock 630D Combination Lock User Guide

October 20, 2023
Master Lock 630D Combination Lock How to Change the Combination Operating Instructions: This lock is preset to open at 0-0-0. To set your own combination: Set dials so 0-0-0 aligns…

Master Lock Keys and Keyways Explained

Datasheet
Detailed guide to Master Lock keys and keyways, illustrating the relationship between different key types and their corresponding part numbers for various pin configurations (Four Pin, Five Pin, Six Pin).

Master Lock manuals from online retailers

Master Lock 178D Combination Padlock User Manual

178D • November 28, 2025
This manual provides instructions for the Master Lock 178D Set Your Own Combination Padlock. Learn about its features, setup, operation, and maintenance. This padlock offers a 2-inch wide…

Master Lock Heavy Duty Key Lock Box 5414EC User Manual

5414EC • November 14, 2025
Comprehensive user manual for the Master Lock 5414EC Heavy Duty Key Lock Box, providing instructions for setup, operation, maintenance, and specifications for this 5-key capacity combination lock.

Master Lock support FAQ

Common questions about manuals, registration, and support for this brand.

  • What should I do if I forget my combination?

    For most standard Master Lock models, there is no master reset code. If you have lost the combination to a set-your-own padlock, the lock cannot be reset and may need to be replaced. Some serial-numbered locks may have retrieval options via the official support site.

  • How do I reset the combination on my Master Lock?

    Reset procedures vary by model. Common methods involve rotating the shackle 90 or 180 degrees and pressing down, or using a specific reset tool provided with the lock. Consult the specific manual for your model.

  • Are Master Lock padlocks weather resistant?

    Many models, such as the Magnum series or those with covered keyways and thermoplastic shells, are designed for outdoor use. Standard laminated locks are durable but performing regular maintenance with lock lubricant is recommended for outdoor environments.

  • How do I identify a TSA-accepted lock?

    TSA-accepted locks feature the Red Diamond Travel Sentry® logo. This allows airport security to open, inspect, and relock your luggage without cutting the lock.