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BS EN 12051:2000
Building hardware. Door and window bolts. Requirements and test methods (British Standard)
This European Standard specifies performance, security and safety requirements (including test methods) for single point bolts and their associated keeps, used to secure, or increase the security of, doors or windows in buildings; where operation is by lever, knob, slide, pull, etc, or removable implement (but not a multiple differ key) from the protected side of the leaf only. Spring engaging bolts, and bolts with locking facility are included if they are, by definition, bolts (see 3.1.1).
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British Standards Institution [bsi]
British Standards Institution [bsi]