Cross or edge bore.
Interior door handle hole size.
The standard sized bore hole is 2 1 8 in diameter.
When replacing locks the latch backset needs to match the holes bored in the door.
Through the edge of the door there is a 1 cross bore that extends from the edge of the door through the bore hole.
The center of this hole should be located 2 3 8 inches or 2 3 4 inches back from the edge of the door.
To know where to drill this hole from the edge of the door you need to know the backset of the lockset.
The two most common are 5 1 2 and 6 from the centers of the two holes.
The latch will fit into the 1 inch hole.
Choose the mark that corresponds to the door width.
The hole saw has a pilot bit that centers on the mark.
Bore a 2 1 8 inch hole through the door.
Note that the template offers two possibilities for the barrel hole one for a 1 3 8 inch door and one for a 1 3 4 inch door.
In most cases the door set which is inside of the door and controls the door latch.
Tape the template to the door and mark the centers of the lockset and barrel hole by making an indentation with the tip of a spade bit.
Fit into the door prep shown above.
Exterior locksets commonly have a 2 and 3 4 inch backset.
When boring deadbolt locks in a door there are two standards for spacing between the bottom lock and the deadbolt.
Backsets and 1 3 8 in.
Most interior locksets have a 2 and 3 8 inch backset.
The dewalt door lock installation kit helps you install door locks on wood and metal doors.
This cross bore is where the latch is installed.
The point where the two lines intersect is the center of the hole.
The small hole along the edge of the door frame usually measuring about 1 inch in diameter.
The bore hole is the large diameter hole where the door knob is mounted.
Exterior doors are typically 1 3 4 inches thick while interior doors measure 1 3 8 inches thick.
This is the backset dimension bore a 1 inch hole in the edge of the door located on the centerline of the 2 1 8 inch hole.
Lock spacing the distance between two locks.
Mark the line at 2 3 4 inches for an exterior door.
Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
Most interior doors are prepped with a single boor hole.
It features two bi metal hole saws and a height alignment window for accuracy.