This .Aerospace Series» pre-standard has been drawn up under the responsibility of AECMA
(Association Européenne des Constructeurs de Matériel Aérospatial). It is published on green paper
for the needs of AECMA-Members. It has been technicallyapprovedby the experts of the concerned
AECMA Commission following comment by the Member countries.
AECMA PREN 3149-1987 history
1987AECMA PREN 3149-1987 Aerospace Series Shank Nuts, Metric Installation Holes Issue P 1