BBI 011145 Cap Screw, 1/4-20 UNC x 1/2 in, 3/16 in Hex Drive, Grade 3A, Heat Treated Alloy Steel
BBI Cap Screw, Series: 1936/1960, UNC, 1/4-20, 1/2 in Overall Length, Round Socket Head, 3/8 in Head, Hex Drive, 3/16 in Drive, 180000 psi Tensile, HRC 38 - 43 Hardness, Heat Treated Alloy Steel, Grade: 3A, Plain
- Right hand thread direction