Features Galvanized steel material: hex socket screws are made of galvanized steel, with exquisite workmanship, smooth and delicate appearance, durable and long lasting. Sufficient quantity: one set of round head screws has 50 round head hex socket screws, which are enough to meet the different needs of users, and I believe that they can make your life more convenient. Application Screws are widely used in various precision machinery industries, classification instruments, instruments, electronics, printing technology, household and office electrical appliances, communication equipment, ship assembly, etc. with a variety of functions and obvious effects. Basic Specifications This is an easy to install round head socket with M4x0.7mm thread, perfect replacement for old or broken one. High Quality The round head screw is small, lightweight, easy to carry, 100% brand new and high quality, reliable and safe in quality. Specification: Item Type: Hex Socket Pan Head Screws Material: galvanised steel. Thread model: approx. M4x0.7mm/0.03inchModelWorking length (approx. )2802-0004-0025 25mm/1.00in2802-0004-0030 30mm/1.18in2802-0004-0035 35mm/1.38in2802-0004-0040 40mm/1.57in2 80202-0004-0045 45mm/1.77in2802-0004- 0050 50mm/2.00in2802-0004-005555mm/2.16in2802-0004-0060 60mm/2.36in. Package list: 50 x screws. Note: Adjust the correct size before use Package List 50 x Screw