BBI 455676 Partially Threaded Cap Screw, 1-8, 4-1/2 in L Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6

BBI Cap Screw, Partially Threaded, Measurement System: Imperial, 1-8 Thread, 4-1/2 in Length Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6, UNC Thread, 39/64 in H Head, Hex Head, 150000 psi Tensile Strength, Material Specification: ASTM B633-Fe, Zn5 Type 2, 1 in Shank, 33 to 39 HRC Hardness