Square Head Set Screw, Cone Point, 1/2-13 x 1 1/2", Alloy Steel Case Hardened, Black Oxide, Full Thread (Quantity: 500)

Designed for Permanent Settingon 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,Black Oxide is not a protective finish and will rust if exposed to moisture. Stainless Steel material is recommended for environments with moisture