Socket Set Screw, Cone Point, 3/8-16 x 5/16", Alloy Steel, Black Oxide, Hex Socket (Quantity: 100) Coarse Thread, 3/8 inch Grub/Blind/Allen/Headless Screw, Length: 5/16 inch

Designed for Permanent Setting on soft or hardened shafts | Deep penetration gives this style of screw the highest torsional and axial holding power | Can be used as a hangar or pivot. For shafts of Rockwell hardness C15 or more, spot point half its depth | Recommended Hex Socket (Allen Wrench) Size: 3/16 (Inch) | Black Oxide is not a protective finish and will rust if exposed to moisture. Stainless Steel material is recommended for environments with moisture