Raise the last piece into which the bolt inserts to the same height on the door jamb.
How to install high security door lock.
High security door locks will have hardened steel bolts that withstand bludgeoning attacks kicks battering rams sledge hammers shoulder strikes etc used against the door.
Without strength these attacks would bend or snap a bolt severely enough that it fails.
If you re in a situation where you cannot or do not want to use a drill to install your lock there are a couple ways of installing an interior door lock without a drill.
He wanted to be able to give to his customers the highest level of security without costing them the earth.
These locks should ideally be deadbolt locks because they are a much better security option.
High security lock pin installation locks bump key bumping pick picking locksmith keys.
Look into keyed entry door knobs also called privacy knobs portable door locks or top of door locks.
Grade 1 deadbolt locks should be able to withstand 250 000 cycles and 10 strikes against the door.