1/2 -13 x 1 Steel Coarse Thread Square Head Set Screws SHSSSS-065 (6 pcs.)

Diameter: 1/2 Length: 1 Material: Steel Head Style: Square (Square) Thread Size: 13 (Coarse) Thread Length: Full Type: Set Screw Box of 6. A set screw is a type of screw generally used to secure an object within or against another object normally not using a nut. The most common examples are securing a pulley or gear to a shaft.