How to Fix a Bent Cylinder in a Deadbolt Lock?

Answer A deadbolt lock with a bent cylinder renders the entire device useless. Fixing these locks when the cylinder is even slightly bent can be difficult if the lock is not removed from the door. Often a... Read More »

Top Q&A For: How to Fix a Bent Cylinder in a Deadbolt Lock

What is the difference between a single cylinder&a double cylinder deadbolt lock?

Deadbolt locks offer a strong measure of security for exterior doors. Deadbolts are often used on both front and back exterior doors. Double cylinder deadbolts are designed for a specific purpose.F... Read More »

Can I replace a grade 3 deadbolt lock with a grade 1 deadbolt without making changes to the door?

The grade wouldn't make any difference. It depends on what brand door lock the hole in the door was originally cut for. Most are 21/8" hole side with a 1" hole cut for the backset. There are a few... Read More »

How to Install a Single Cylinder Deadbolt?

Installing a deadbolt on your exterior door can add an extra level of security to your home. Unlike a standard locking doorknob, a deadbolt extends into the door jamb and cannot be forced back into... Read More »

What Is a Double Cylinder Deadbolt?

A double cylinder deadbolt requires a key to lock or unlock the door from the interior and exterior sides of the door, opposed to having a twist knob on the interior. Locks of this type can be a hi... Read More »