1.Name: DIN 6334 Galvanized Hex Coupling Nut 2.Meterial:Carbon Steel 3.Finish:Zinc plated 4.Size:M8-M36 5.Cert:ISO9001:2008 1.What’s the specification of our Hex Coupling Nut? 1.NameDIN 6334 Galvanized Hex Coupling Nut Manufacturer2.standardDIN 63343.MaterialCarbon Steel,Stainless Steel4.ClassGR.A,2,55.FinishZinc plated;6.Size 1/4~6;M8-M367.Supply abiltity1000 tons per month8.CertificateISO9001: ...