BS 3643-1:1981 ISO metric screw threads. Principles and basic data (AMD 3910) (AMD 4701) (Withdrawn)
Applies to single-start parallel screw threads having the ISO basic profile for triangular screw threads. Data for diameters from 1mm to 300mm are tabulated and an appendix gives the information necessary to calculate the limits of size for exceptions to the tabulated data.
Superseded by BS 3643-1:2007.
British Standards Institution
With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.
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