3/4-10X1 1/2 GR2 HEX CAP SCR HDG SAE J429 GRADE 2 HEX CAP SCREWS HDG FULL THREAD ASME B18.2.1 1996 IFI-7 AF 1.100-1.125” HH 0.455-0.483” AC 1.254-1.299”