ASTM A194 2H Heavy Hex Nuts 1. Material: C1035, C1045, 40Cr ... 1/2" - 2 1/2" 3. Finish: Black, HDG A194 Grade 2H Heavy Hex NutSize: 1/2" - 2 1/2"Material ... 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 ... Control EquipmentStrong PackageMode of TransportationThe Best Choice for You ASTM A194 2H Heavy Hex Nuts