7/16-20 OD 1 1-3/4 3-1/2 4 Inch Black Steel US Standard UNF Unified Fine Thread External Outside Hex Hexagon Head CAP Screw Bolt

7/16-20 OD 1 1-3/4 3-1/2 4 Inch Black Steel US Standard UNF Unified Fine Thread External Outside Hex Hexagon Head CAP Screw Bolt

Aliexpress UK