13/30290134 DC被替代
Bs En 4162 - Aerospace Series - Screws 100 Degrees 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 Degrees C
出版：British Standards Institution
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