... standardDIN, ASME,JIS,BS,FR and GB,Nonstandard bolt(according to your order),etc3.MaterialCarbon Steel,Alloy ... steel,stainless steel and brass4.Grade4.6.8.10 etc5.FinishBlack,Zinc plated,Copper plating ... hot dipped galvanized,daromet etc6.SizeM3-M100;1/4"-4"7.Supply ability6000tons per month8.CertificateISO9001:2008;9 ... TransportationThe Best Choice for You GRADE-4.6.8.10 Hex Head NUT DIN 934