BBI 847082 Cap Screw, 5/16-18 UNC x 1-1/2 in, 1/2 in Hex Drive, Grade 5, Medium Carbon Steel
BBI Cap Screw, UNC, 5/16-18, 1-1/2 in Overall Length, Hex Head, 1/2 in Head, Hex Drive, 1/2 in Drive, Fillet Neck, 5/16 in Shank, 120000 psi Tensile, HRC 25-34 Hardness, Medium Carbon Steel, 5, Zinc Plated CR+3