British Standards Document
BS 3643-2
ISO metric screw threads. Specification for selected limits of size

https://doi.org/10.3403/30158489U

BS 3643-2 is maintained by FME/9. The current release of this standard is:

BS 3643-2:2007 ISO metric screw threads. Specification for selected limits of size

https://doi.org/10.3403/30158489 (published 30/11/2007)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS 3643-2:1981 [current until 30/11/2007]
BS 3643-2:1965 [current until 28/12/1966]