What Tools Do I Need to Replace Deadbolts?

Awl

• New deadbolts usually come with a paper template that you tape to the door to mark your holes. If the previous deadbolt doesn't use the same measurements as your new one, you would use an awl to mark where the lock will sit and the areas you'll have to modify. An awl is a steel rod that is sharpened to a point on the end and is used to mark small starting holes in wood for screws and nails. Typically awls have a short wooden or plastic handle.

Hole Saw

• Deadbolt locks typically require either a 2 1/8-inch or a 1 5/8-inch hole. If the previous deadbolt was smaller in size, you'll need to use a hole saw that is appropriately sized to cut the hole to a larger size. Hole saws are round drill bits with a serrated edge that are typically connected to a drill. The bits may be designed for use with a variety of materials, including wood or metal.

Screwdriver

• A screwdriver is required when replacing a deadbolt to fasten the deadbolt parts, which includes the latchbolt and face plates.

Drill and Spade Bit

• Although most manufacturers make deadbolts fairly standard, you may find that your new lock uses longer screws than the previous lock or requires screws in slightly different locations. A drill and spade bit is used to predrill the hole to avoid splitting the wood and ruining the door. Spade bits are similar to other bits at one end in that they fit into most types of drills, but at the other end they're flat and square with a point at the center which is placed into the center of the hole you're drilling.

Utility Knife and Chisel

• Often when replacing a deadbolt, the lines of the old deadbolt work well as a guide. However, if the new lock is larger or shaped differently, you'll have to chisel a mortise for them to fit into. In this case, you place the face plates for the latch bolt and the lock on the door, and use a utility knife to trace their location. Then use the chisel to make a mortise that allows the plates to fit into place.