latch bolt การใช้

Arrow had flown jets on hundreds of trips without having made modifications required by the FAA, like replacing cargo-door latch bolts.
Pry the stop molding off, then close the door until the latch bolt just clicks into the hole in the strike plate.
The company's history dates back to 1926, when William F . Banham invented the first automatic latch bolt lock after a series of burglaries on his wife's dress shop.
I know that a simple spring latch type door lock is easy to force with a plastic card, but my door lock is the type that also has an extra dead latch as part of or behind the spring latch bolt.
A : Chances are the door is slightly warped in the center so that the top or bottom edge of the door ( or both ) contacts the stop molding before the center does, thus keeping the latch bolt away from its strike plate opening