Retail 500 Pcs M3 M4 M5 Hex Button Socket Head Cap Screw Nut Hexagon Metric Thread Machine Bolt Assortment Kit Set Made of 304 stainless steel material, the 304 stainless steel material provides strength and offers good corrosion resistance in many environments. Perfect for use in confined areas as fixing component, industrial and construction fasteners. There are many different length of button head screws that you can use for various purposes. Total 500 screws and nuts for universal purpose use will meet your daily basic needs. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Type: Button head hex socketcolour: silverMaterial: stainless steelPackage Contents:30 x M3x8 Screw30 x M3X12 Screw30 x M3X16 Screw30 x M3X20 Screw20 x M4X8 Screw20 x M4X12 Screw20 x M4X16 Screw20 x M4X20 Screw15 x M5X8 Screw15 x M5X12 Screw10 x M5X16 Screw10 x M5X20 Screw250 x nutOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.