BBI 847448 Cap Screw, 5/8-11 UNC x 4-1/2 in, 15/16 in Hex Drive, Grade 5, Medium Carbon Steel
BBI Cap Screw, UNC, 5/8-11, 4-1/2 in Overall Length, Hex Head, 15/16 in Head, Hex Drive, 15/16 in Drive, Fillet Neck, 5/8 in Shank, 120000 psi Tensile, HRC 25-34 Hardness, Medium Carbon Steel, 5, Zinc Plated CR+3