This standard stipulates the small thread diameter and pitch series in accordance with GB/T15054.1. This standard applies to small threads for general purposes with a nominal diameter ranging from 0.3 to 1.4 mm.
GB/T 15054.2-1994 history
2018GB/T 15054.1-2018 Miniature screw threads.Part 1:Profiles, general plan and basic dimensions
GB/T 15054.2-1994 Miniature screw threads.Generat plan was changed to GB/T 15054.1-2018 Miniature screw threads.Part 1:Profiles, general plan and basic dimensions.