DS EN 4162:2009 Aerospace Series - Screws 100 Degrees Countersunk Normal Head, Offset Cruciform Recess, Coarse Tolerance Normal Shank, Medium Length Thread, In Alloy Steel, Cadmium Plated - 1100 Mpa (At Ambient Temperature)/235 Degrees C Defines the characteristics of screws, 100 degrees countersunk normal head, offset cruciform recess, coarse tolerance normal shank, medium length thread, in alloy steel, cadmium plated.