Master Lock Key Number Identification: A Comprehensive Guide

Losing the key to your Master Lock can be a frustrating experience, especially when you need access to your belongings. This guide provides a comprehensive overview of how to identify your Master Lock key number and what options are available if you've lost your keys.

Master Lock Padlock

Identifying Your Key Number

If you still have a physical key, you should be able to get it duplicated from a local hardware store or locksmith. If you don’t have a key to reference, then another option is knowing your key number to place a special order via an authorized distributor. If you recorded the key number, you may be able to get replacement keys from a hardware store or locksmith. You can securely store your combination or key number with us so that you never lose it. If you lose your key, the number can be used at a locksmith or a hardware store for a new one.

What to Do If You've Lost Your Keys

I lost the keys for my Master Lock padlock. I lost both keys to my Master Lock lock (non padlock). Now I'm unable to get some important items out of storage. If both are not an option, then contacting a locksmith to open or remove your lock would be your resolution. If you didn't record the number, contact a locksmith to remove your lock.

No. Without the key number, there is no way for Master Lock to know which key will open your lock. There is not a master key that will open all Master Lock products.

Master Lock Key Options

New quick way to open a masterlock 175 without a pick or decoder

Key Replacement Options

My hardware store no longer provides key replacement. We do not supply replacement keys directly to customers. My hardware store could not get a new key for my lock. Check with a local locksmith to see if they can duplicate a replacement key. Sometimes, replacement keys are not available for every model of lock.

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Rekeyable and Interchangeable Core Padlocks

The cylinder in rekeyable padlocks can be removed in order to (a) change the pinning or (b) replace the original cylinder with a new one, restoring security quickly and economically. This is ideal for situations where keys are lost or stolen. Products with this option can be identified by "rekeyable" in the item description. Interchangeable core padlocks and door locks don't require disassembly in order to change the cylinder. The Master Lock assortment of cylinders includes 16 distinct keyways to match existing profiles from Best®, Falcon®, and others.

Keyed Alike Systems

All padlocks in the set are opened by the same key. This option provides "same key" convenience and eliminates the need for multiple keys where numerous padlocks are used. KA in the product number (ie 3KA) designates that the products are Keyed Alike. In a Master Keyed system, a master key opens all the locks in the system although each lock also has its own unique key.

Keyed Alike Padlocks

Door Key Compatibility

The Master Lock assortment of Door Key Compatible Padlocks means that the same key can open all your facility's padlocks and door locks as well. Most popular door keyways can be matched to a complete line of Master Lock and American Lock padlocks.

Master Lock No. 3KA Padlock Features

Master Lock No. 3KA Padlock (Match to Existing Key Number)Durable, general security padlocks have reinforced laminated steel construction to withstand physical abuse and a 4-pin cylinder offering up to 1,400 key changes. Features and Benefits:

  • Commercial grade padlock features superior protection from drilling and prying.
  • 1-9/16" (40mm) wide laminated steel body for superior strength.
  • 9/32" (7mm) diameter hardened steel shackle for superior cut resistance.
  • Dual locking levers provide extra pry resistance.
  • Non-rekeyable, 4-pin W1 cylinder helps prevent picking.

Keying Option: Keyed Alike (3KA). All No. 3 Padlocks come with 2 keys. Shackle Option: Select Shackle Size -- 3/4" (Standard), 1-1/2" (LF) & 2" (LH). Special Ordering: All Master Lock Special Orders ("Match to Existing Key Number") require a 3-4 week factory lead time. Please enter your existing key number in the "Keying Instructions" box below.

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Feature Description
Body Width 1-9/16" (40mm)
Shackle Diameter 9/32" (7mm)
Keying Option Keyed Alike (3KA)
Cylinder Type Non-rekeyable, 4-pin W1

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