
Aerospace series; screws 100? countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated; classification: 1100 MPa (at ambient temperature)/235 ?C
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
PREN 4162:1994 - Identical