1 3/8-6 X 6 GR5 HEX CAP SCR ZC SAE J429 GRADE 5 HEX CAP SCREWS ZINC ASME B18.2.1 IFI-9, Thread Length 3” approx, AF 1.994-2.062” HH 0.810-0.878” AC 0.273-2.382” 12/BULK