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Locksmithing/Putting a Kwikset cylinder in a Master Lock pad lock


I have an A700 series Master Lock pad lock alocg with a whole bunch of Kwikset knobs and deadbolts. I forgot which cylinder the pad lock has. I'm almost positive it has either the APTC12 or APTC14 cylinder. I would like to have all of my Kwikset knobs and deadbolts and this Master Lock opened with 1 Kwikset key. My question is, can I put a cylinder in my Master Lock pad lock that will accept a Kwikset key?

Hello Nick,

An A700 is an American Lock padlock that uses an APTC12 cylinder.  That padlock doesn't have enough room for a standard cylinder.

You need a padlock that will accept a KIK cylinder like an A3600, A3700, A3800 or you can go with a Master Lock 6621.  Add an Ilco 1539 cylinder and the cylinder drivers, rekey the cylinder to match your Kwikset lock and assemble the padlock.



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I do not answer Safe or automotive questions. Period. I am knowledgeable in almost every area of Locksmithing. This includes locks, keys, lost keys, residential and commercial lockouts, rekeying, masterkeying, high security locks, access control, electric locks, security cameras and home safety. I have been running an online business since 2004 where I sell all types of lock and security hardware to everyone from apartment renters to business owners to the US government. Before that I started a locksmith service in 1999. I deal with many types of security equipment including high security safe locks, heavy duty padlocks, exit devices, biometric readers, electric strikes, magnetic locks, full surface hinges and I only sell what I personally stand behind 100%. The online business has given me a more in-depth look at the locksmithing industry, helping me to learn more about each and every product that I offer, as well as products I don't have but end up finding for customers to solve any issues they have with security or door hardware.

Please don't submit any automotive or safe questions as these aren't areas that I can help in.


I have been Locksmithing since 1999 and own my own Locksmithing business. I have many years of hands-on experience through the many services I have performed for my customers. I've run my business the way I wanted, treating everyone as I would like to be treated and knowing that any customer could be my last if I didn't perform my locksmithing duties as I had promised.

I have a diploma in Masterkeying, Advanced Locksmithing & Locksmithing from Foley-Belsaw.

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