ASTM A194 2H Heavy Hex nut Dia: 1/4" - 2 1/2" Standard: ASTM A194,2H, ASTM A563 Finish: Plain, ZP, Black, HDG OEM/ODM ASTM A194 2H hex nut1. Type:M6-M1002. Class:Gr. 2H, 2HM, , GR. 4, GR. 7, 7M, GR. B7. GR. B7MGr6, Gr8, Gr10, Gr12GR. 8.8, 10.9, 12.93. Finish: Black, Zinc, Zinc Yellow, H. D. G Our factory specialize in producing standard hex Nuts, slotted hex Nuts, square Nuts, special Nuts and ...