ISO 1609 Vacuum technology — Dimensions of non-knife edge flanges*, 2020-01-10 Update
ISO 286 Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts; Technical Corrigendum 1
ISO 3 Preferred numbers; Series of preferred numbers
ISO 965-1:2013 ISO general purpose metric screw threads.Tolerances.Part 1: Principles and basic data
BS ISO 3669:2017 history
2020BS ISO 3669:2020 Vacuum technology. Dimensions of knife-edge flanges
2017BS ISO 3669:2017 Vacuum technology. Bakeable flanges. Dimensions of knife-edge flanges