Grade: 4.8/6/8/8.8/10.9/12.9 etc Plain, black, zinc plated, hdg Material: carbon steel gennerall Manufacturer direct selling 10 years exporting experience Specification: Commodity name: Standard: din/astm/gb/iso/bsw, non-standard ( according to your drawing or sample), etc Material: carbon steel, stainless, alloy steel Grade: 4.8, 6.8, 8.8, 10.9, 12.9 etc Surface finish: black, zinc plated, hot dipped galvanized, phosphating, copper plating Size: m6-m100, 1/4"-4" Usage: construction, industry, petroleum industry, bridge, marine, machine fasteners, etc. Supply ability: 300 mt per month Packing: by carton or gunny bag then on wooden pallet or according to client¡¯s requirement Delievery: within 15 days per container for the usual size What kind of products we can offer? We are the manufacturer of fasteners, so we can offer the goods you need with all size. What about our factory? Yongnian yundu fastener co., ltd, we are one of the biggest manufacturers in hebei province yongnian county which j Grade: 4.8, 6.8, 8.8, 10.9, 12.9 etc Size: m6-m100, 1/4"-4"