5/8-18X6 GR8 UNF HEX CAP SCR YZ SAE J429 GRADE 8 HEX CAP SCREWS YELLOW ZINC ASME B18.2.1 1996 IFI-7 AF 0.922-0.938” HH 0.378-0.403” AC 1.051-1.083” – 25/BOX