Glossary of Terms
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Spindle
The bar or tube connected with the knob or lever handle that passes through the hub of the lock or otherwise engages the mechanism to transmit the knob action to the bolt(s).
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Spring Hinge
A hinge containing one or more springs to move the door into the closed position. It may be either single or double acting.
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Stile (of a Door)
A vertical member of the door structure each door has two, a lock stile and a hinge stile.
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Strap Hinge
A surface applied hinge of which one or both leaves are of considerable length.
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Strike
A metal plate or box that is pierced or recessed to receive the bolt or latch when projected. Sometimes called Keeper.
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Strike Box
A box that is installed behind a strike to finish and protect the strike opening.
