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  2. Officer's tool - Wikipedia

    en.wikipedia.org/wiki/Officer's_tool

    An officer’s tool (also known as an A-tool, rex tool, or lock puller) is a forcible entry device used by firefighters and other first responders. Officer’s tools are designed to completely remove cylindrical locks from doors without causing major structural damage, allowing for direct access to the internal locking mechanism.

  3. Mortise lock - Wikipedia

    en.wikipedia.org/wiki/Mortise_lock

    The parts included in the typical US mortise lock installation are the lock body (the part installed inside the mortise cut-out in the door); the lock trim (which may be selected from any number of designs of doorknobs, levers, handle sets and pulls); a strike plate (or box keep), which lines and reinforces the cavity in the door jamb or frame ...

  4. K-tool - Wikipedia

    en.wikipedia.org/wiki/K-tool

    The K-tool can be used to pull the core from the lock without damaging the door itself. The K-tool is also useful during investigations where no fire is readily evident. The core can be pulled from a lock, which can often be repaired at lower cost than replacing a door and jamb damaged by other, more energetic entry methods.

  5. List of screw and bolt types - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_and_bolt_types

    Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. Twinfast screw: A Twinfast screw is a type of screw with two threads (i.e. a twin-start screw), so that it can be driven twice as fast as a normal (i.e. single-start) screw with the same pitch. [4]

  6. Door lock - Wikipedia

    en.wikipedia.org/wiki/Door_Lock

    a deadbolt lock; a door chain; a locking door handle; an electromagnetic lock, which holds a door shut when electricity is supplied to it; a keycard lock, commonly used on hotel doors; a mortise lock, a lock installed in a hollowed-out pocket within a door; a rim lock, a lock fixed to the exterior of the door

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