Features Gasmatehas tenstreand corroresistin environments The recealdriwtisensfor wrenches Iforin tawthe ntfor bthe surface for fastein houseand ofappliancommunicaequipmasseor omachiindustries Sc8 cothlenare packcompartmand sotranspaplaboxconvenusestorage Description: These flat head hex socket head screws are made of 10.9 grade alloy steel, which is resistant to rust and corrosion. There are 8 thread lengths to choose from, which can be widely used in home and office appliances, machinery, furniture, etc. Features: 1. Grade 10.9 alloy steel material has good elongation resistance and corrosion resistance in many environments. 2. Recessed head allows driving where there is not enough space for wrenches. 3. Ideal for use in tight areas where the head needs to be flush or below the surface. 4. Used for fasteners in household and office appliances, communication equipment, ship assembly or other machinery industries. 5. Screws with 8 common thread lengths are well packed in 8 compartments and sorted in a transparent plastic box for convenient use and storage. Specifications: Material: Grade 10.9 alloy steel Color: Black Thread lengths: 4 mm (30 pieces), 6 mm (30 pieces), 8 mm (30 pieces), 10 mm (30 pieces), 12 mm (20 pieces), 16 mm (20 pieces), 20 mm ( 20 pieces), 25 mm (20 pieces) br> Thread diameter: 3 mm (M3) Box size: 13 * 6.5 * 2.3cm/5 * 2.6 * 0.9 inch Quantity: 1 x Box of 200 screws Package weight: 138g Type: Flat Head Hex Socket Screw Function: clasp Package includes: 1 x box of 200 screws Package List