ASTM A194 2H Heavy Hex Nuts 1. Material: C1035, C1045, 40Cr, 42CrMo 2. Size: 1/2" - 2 1/2" 3. Finish: Black, HDG A194 Grade 2H Heavy Hex NutSize: 1/2" - 2 1/2"Material: C1035, C1045, 40Cr, 42CrMoSurface: Hot Dip Galvanized/HDG, Black, Yellow ZincThe following Grade of heavy hex nuts are also available:ASTM A194 2HM, Gr.4; ASTM A563 Gr. C, DHOur regualr products are as following:Bolt: hex bolts, ...