DIN934 Gr 4.8, Plain Hex Nut, Carbon Steel Hex Nuts material: ... steel , finsih with yzp .zp,black... grade in 4DIN934 DIN934 Gr 4.8, Plain Hex Nut, Carbon Steel Hex NutsStandard: din934 ... % advance,then 70% against the copy of the BL. DIN934 Gr 4.8, Plain Hex Nut, Carbon Steel Hex Nuts