Hex head cap screw. Duplicate of 1930’s Scripps marine engine fastener.
Material: 4140, heat treat grade 8
Finish: Black oxide
Thread: 3/18-16
Thread length: 1.25
OAL: 3 1/4
Shank length: 2.00
Head height: .280
Hex: 9/16
Weight | 0.0010 lbs |
---|---|
Dimensions | 4 × .5 × .5 in |