Using a 7/8” hole saw,
drill the hole for the
lock spindle. It is
drilled to the mortise
cavity. Drill from both
sides of the door.
Use a 1-1/4” hole
saw to drill the
mortise cylinder hole
on the outside of the
door.
If your mortise lock
installation required
an inside thumb
turn, use a 1/2” twist
drill and drill the
required hole on the
inside of the door
only.
PAGE 5
When all holes have
been drilled, remove
the HIT-66 drill guide
from the door. This is a
prep for a Best mortise
lock with rose trim. If
installing escutcheon
trim see next page.
Completed lock prep.
Install lock per
manufacturers
directions
.
That’s all there is to
it!
Copyright 2011—Major Manufacturing
