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Master Lock Manuals & User Guides

User manuals, setup guides, troubleshooting help, and repair information for Master Lock products.

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-logo

Master Lock Company LLC is located in Nogales, AZ, United States and is part of the Investigation and Security Services Industry. Master Lock Company LLC has 5 employees at this location. There are 211 companies in the Master Lock Company LLC corporate family. Their official website is Master Lock.com.

A directory of user manuals and instructions for Master Lock products can be found below. Master Lock products are patented and trademarked under brands Master Lock Company LLC.

Contact Info:

 1600 W La Quinta Rd Nogales, AZ, 85621-4566 United States See other locations 
 (520) 377-2804
Actual

 1.0 

 2.31

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 4400D Bluetooth Padlock User Manual

4400D • November 7, 2025
Comprehensive user manual for the Master Lock 4400D Indoor Personal Use Bluetooth Padlock, covering setup, operation, maintenance, troubleshooting, and specifications.