1060Pcs M2 M3 M4 M5 Socket Cap Flat Button Head Bolt Screws Hex Nut Washer Set. Feature: 1. [High quality]: Made of high quality 12.9 grade carbon steel (socket cap head only) and 10.9 grade carbon steel (flat and round head). They have superior wear resistance and the excellent of oxidation resistance, which can ensure long time using. 2. [Standard Metric]: Our M2 M3 M4 M5 screws and nuts accord with standardized metric system. And the average error is less than 0.01mm. The Nuts and flat washers expand the contact area and reduce the pressure in order to protect the screws and parts.Compact and force uniform screw thread is not easy to out of shape and slid in the process of rolling and installation. 3. [What you get]: 1060Pcs M2 M3 M4 M5 screws, nuts washers and wrench. 4. [Broad Application]: M2 M3 M4 M5 Hex Button Head Screws Washers and Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY. The set is perfect to replace broken and missing screws. When you are mad for the missing bolts, it is a perfect friend for you.The kit has lots of different sizes, which can meet the maximum of requirement for you. Specification: Screws type; Flat socket cap head screw; Size:M2 M3 M4 M5; Material; Carbon steel; Package included:1060 X; Screws nuts and washers included(M2, M3, M4, M5)