Name:ANSI 2H Heavy hex nut Material:35k,45#,40Cr,35CrMoA,42CrMoA Finish:black ;zinc plates Certificate:ISO9001: 2000 1)Standard: ANSI 2)Grade ... ,42CrMoA) 5)Process:Cold heading/hot forging 6)Finish:black oxidized,zinc plates(white Zinc,blue Zinc,color Zinc,white&blue Zinc ... ,black Zinc),hot dip galvanized,Dacromet 7)Packing:25kg per export ...