BBI 502042 Tap Bolt, 1/4-20 UNC x 2-1/2 in, 7/16 in Hex Drive, Medium Carbon Steel
BBI Tap Bolt, UNC, 1/4-20, 2-1/2 in Overall Length, Hex Head, 7/16 in Head, Hex Drive, 7/16 in Drive, 120000 psi Tensile, HRC 25 - 34 Hardness, Medium Carbon Steel, Grade: 5, Zinc CR+3