Features 1、Application: Can be used for various accuracy machinery industries, classified instruments, instruments, electronics, printing projects, etc. 2、Galvanized Steel: Made of galvanized steel, high strength, durability and corrosion resistance 3、Sufficient Quantity: 100pcs round head hex socket screws in a set, sufficient quantity to meet the various needs of users 4、Basic Specifications: This is round head hex socket, easy to install, the thread model is M4x0.7mm 5、Wide Uses: Widely used for machinery industries such as household and office electrical appliances, communication equipment, ship assembly, etc. Specification Item Type: Button Head Socket Caps Screws Material: Galvanized Steel Thread Model: Approx. M4x0.7mm / 0.03in Model Working Length (Approx.) 2802-0004-0006 6mm / 0.24in 2802-0004-0008 8mm / 0.31in 2802-0004-0010 10mm / 0.40in 2802-0004-0012 12mm / 0.47in 2802-0004-0016 16mm / 0.63in 2802-0004-0020 20mm / 0.80in Package List 100 x Screw