This industrial standard for the aerospace sector has been drawn up under the responsibility of AECMA
(Association Européenne des Constructeurs de Matériel Aérospatial).
AECMA PREN 2158-3-1979 history
1979AECMA PREN 2158-3-1979 MJ Threads Part 3 - Tolerances and Limiting Dimensions Aerospace Series Edition 1