Questions & Answers on deadbolt

I have heard about the Deadbolt locks, I want to have it in my safe but firstly I need some information about Deadb...

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the place is unlocked most of the time - do they make a deadbolt that you must return to original position - locked...

i need to know how to change an old harloc deadbolt, there are no screws or allen set screws. i never had the keys?

I can get the latch mechanism to lock and unlock, but the key from the outside will not turn at all.

a usual deadbolt is removed bt unscrewing the two screws that are on the interior side - - i have a locksmith insta...