hex nut 1.Material:stainless steel,carbon steel 2.Dia:M2-M20 3.free sample,more than 10 years supplier 4.SGS,Rohs Hex Machine Screw Nuts — 18-8 Stainless Steel, CoarseMaterial:stainless steel,steel,copperDia:M2-M20Surface Finish:nickel plated,white zinc,black zinc,color zinc,black oxide,chrome platedMin Order:100000 pcsStandard:JIS,BS,ISO,DINPacking:carton box,poly bag,and paper bag,or according ...