4140 Steel M4 x .75 round head screw heat treated to grade 8 for maximum durability. For use on Hispano Suiza J-12 frame.
Material: 4140, heat treat grade 8
Finish: Natural
Thread: M4 x .75
Thread length: 10mm
Length: 16mm
OD: 8mm
Length under head: 12mm
Head height: 4mm
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