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Locksmithing/Remove a U.S. Lock deadbolt lock


How can I remove a U.S. Lock brand of dead bolt lock from my front door. A call from the manufacturer said to use an allen wrench on either side of the dead bolt - at the edge of the door. One wrench seemed too small and the next to large. I am thinking of drilling out the set screws on each side of the dead bolt. Will that work?  Thank you very much.

Hello Herb,

It depends on the model but if you have a Lori style deadbolt they were on the right track.  The best way to tell is if you remove the screws on the door edge where the bolt is and you see a small hole on either side of the bolt, you have this style.  The set screws are fairly far back so drilling them may not be easy.  A 5/64" Allen wrench is the required size for those.  You have to make sure you keep the wrench level until you find the screw head.  Loosen the screw, you don't have to remove it.  Insert a key into the cylinder half way in and as you loosen the set screw turn the key counter-clockwise to unscrew the cylinder.  If it won't move, keep loosening until it does unless you have a cylinder on both sides of the door, then you may have to turn the cylinder with more force to get it started.

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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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