British Standards Document
BS 3643-1
ISO metric screw threads. Principles and basic data

https://doi.org/10.3403/30158487U

BS 3643-1 is maintained by FME/9. The current release of this standard is:

BS 3643-1:2007 ISO metric screw threads. Principles and basic data

https://doi.org/10.3403/30158487 (published 30/11/2007)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS 3643-1:1981 [current until 30/11/2007]