7/8-9X1 1/2 GR8 HEX CAP SCR YZ SAE J429 GRADE 8 HEX CAP SCREWS YELLOW ZINC FULL THREAD ASME B18.2.1 1996 IFI-7 AF 1.285-1.312” HH 0.531-0.563” AC 1.465-1.516”