stainless steel hex bolt 1.materials:sus,brass,aluminum,ste 2.size:M1-M20 3.long:3-200 4.standard:ISO& DIN& GB..... DetailsItem namehex bolts/high strength hex head stainless steel boltsmaterialCarbon steel, stainless steel grade4.8/8.8/9.8/10.9/12.9 sizeM5-M6Surfaceplain,zinc plated,black oxide,hot dip galv.etcD/T25-30days after order confirmationCustomizeddifferent sizes and colors/customer's ...