BS 3621:2017

BS 3621:2017 specifies performance requirements and test methods for a thief?resistant mechanically operated single-point lock assembly (including locking plates, fixing screws, fitting instructions, cylinders and protective furniture where appropriate) that:

• a) incorporates a lock conforming to BS EN 12209:2016 that can be locked from both sides with a key thereby only allowing key egress; and
• b) is used in doors, window doors and entrance doors in buildings.

This standard does not cover thief-resistant lock assemblies that provide keyless egress, i.e. lock assemblies that can always be unlocked from the inside without the need for a key, or lock assemblies that provide a secure (no egress) mode in addition to keyless egress.


Cross References:
BS EN 1303:2015
PAS 24:2016
BS EN 12209:2016
BS 7398:1991 BS 10621:2007
BS EN ISO/IEC 17065:2012
BS 8621:2007
305/2011/EU
Building Regulations 2010
Construction Products Regulations 2013


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