British Standards Document
BS 10621
Lock assemblies in which the operating mode can be switched between the normal BS 8621 operating mode and a secure mode in which no egress is possible

https://doi.org/10.3403/30338195U

BS 10621 is maintained by B/538/4. The current release of this standard is:

BS 10621:2017+A1:2024 Lock assemblies in which the operating mode can be switched between the normal BS 8621 operating mode and a secure mode in which no egress is possible

https://doi.org/10.3403/30338195 (published 08/06/2017)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS 10621:2017 [current until 26/09/2024]
BS 10621:2007+A2:2012 [current until 08/06/2017]
BS 10621:2007+A1:2009 [current until 30/06/2012]