BBI® 455472 Partially Threaded Cap Screw, 5/8-18, 2-1/2 in L Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6

BBI® Cap Screw, Partially Threaded, Imperial, 5/8-18 Thread, 2-1/2 in Length Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6, UNF Thread, 25/64 in H Head, Hex Head, 150000 psi Tensile Strength, Material Specification: ASTM B633-Fe, Zn5 Type 2, 5/8 in Shank, 33 to 39 HRC Hardness.