Features 1.Application: For automobile industrycars trucks buses construction machinery wind power equipment agricultural machinery etc. 2.Function: Closely connect the mechanical equipment increase the contact area reduce the pressure prevent loosening to protect the parts and screws. 3.Complete Kit: Including various sizes of M3 M4 M5 M6 screws bolts nuts and flat washers also provide 4 free relevant wrenches. 4.Premium Materials: Made of high quality 304 stainless steel materials with high strength not easy to break or rust. 5.Powerful Function: Effectively meet different demands the necessity of your home life bring you more convenience. Specification Item Type: Hex Socket Screw SetMaterial: 304 Stainless Steel Surface Treatment: WhiteningStandard Type: German standardCategory: bolts washers nutsSizes: M3 M4 M5 M6Accessories: Hex wrenchApplication: For automobile industry-cars trucks buses construction machinery wind power equipment agricultural machinery foundry industry drilling equipment shipbuilding industry mining equipment public facilities rail transit etc. Package List 120 x Screws140 x Nuts140 x Washers4 x Wrench1 x Storage Box