BBI 455072 Fully Threaded Cap Screw, 5/16-18, 5/8 in L Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6

BBI Cap Screw, Fully Threaded, Measurement System: Imperial, 5/16-18 Thread, 5/8 in Length Under Head, 8 Grade, Alloy Steel, Zinc Yellow Bake CR+6, UNC Thread, 13/64 in H Head, Hex Head, 150000 psi Tensile Strength, Material Specification: ASTM B633-Fe, Zn5 Type 2, 33 to 39 HRC Hardness