3/8-24X2 GR8 UNF HEX CAP SCR YZ SAE J429 GRADE 8 UNF HEX CAP SCREWS YELLOW ZINC ASME B18.2.1 1996 IFI-7 AF 0.551-0.562” HH 0.226-0.243” AC 0.628-0.650”