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  1. Lockstuff: Open Master Lock 5400D, 5401D without combination …

    Quick video on how to open up the dial type master lock boxes without the combination. This method allows you to decode the combination and even change it on...

  2. How to Open a Master Lock Combination Lock without the Code

    May 4, 2025 · While Master Locks are strong, cracking the code isn’t impossible. If you want to avoid cutting your lock open or breaking it, we’ve got you covered: we’ll give you a DIY method …

  3. Lost Combination Help & Replacement | Master Lock

    Does your Master Locklock have a serial number? If it doesn't, we won't be able to help you find your combination because we don't have a record of it. Learn how to find your lock's serial …

  4. How To Open Master Lock Key Box (Without a Code)

    Feb 9, 2022 · If you have lost the code to your master lock, you will probably be on the verge of tossing that lock from a window or bringing out the bolt cutters. Rather than do that, we have a …

  5. How to Open a Master Lock Without a Key (Effective Strategies)

    Aug 8, 2023 · Are you wondering how to open a Master Lock without a key? Learn five effective ways in this article by Serious Home Security!

    Missing:
    • code
    Must include:
  6. How To Reset A Master Combination Lock Without The Code

    This guide will walk you through the essential steps on how to reset a master combination lock without the code. Understanding the lock and its mechanics is crucial for successfully …

  7. How to Unlock a Master Combination Lock Without the Combination

    Master combination locks are used to secure lockers at school, work or the gym, as well as shed doors and equipment chests. If you forget the combination and can't find where you stored the …

    Missing:
    • code
    Must include:
  8. How to Open a Lockbox without the Code - Safety Wish

    Jul 26, 2024 · Opening a lockbox without the code can present a challenge, but there are several methods to regain access depending on the type of lockbox you’re dealing with. This article …

  9. 5 Steps to open master lock without a key - Locksmith PHILLY

    Step number 1: Firstly, carefully check whether you have a backup or not. This means when you purchased the master lock, have you put the spare keys somewhere under the bed or in the …

    Missing:
    • code
    Must include:
  10. How To Unlock A Master Lock Without Code: Forced Entry & Pick Locks

    Jul 2, 2025 · Discover how to unlock a Master Lock without the code using forced entry tools like pliers and wire cutters or master picks including straight pins and bent wires.