Material:Carbon Steel , Stainless Steel Type:Hexagon Head Head Style:Hexagonal Standard:DIN Application:Machinery Connection:Common Bolt Finish:Polishing Grade: 4.8,6.8,8.8, 10.9,12.9 Surface:Passivation, Polishing Size:M3-60 Name:DIN931&DIN933&DIN961hex Bolt/ Hex Head Bolt Export Markets:Global Additional Info. Trademark:NGL Packing:Bulk in Master Cartons, Then on Pallets Standard:SGS Origin:Ningbo HS Code:73181500 Production Capacity:20ton/Week Product Description We are professional suppliers on high quality fasteners, insisted on the principle of high quality and the best service. Our products and service have extended to Europe, East Asia, North America, middle east and all Over the world.