Description: These hex socket screws are made of 304 stainless steel, which are resistant to rust and corrosion. There are 10 optional lengths for you to choose from, which can be generally used in home and office appliance, machinery, furniture, etc. Features: 1. 304 stainless steel material has good strength of extension and corrosion resistance in many environments. 2. Button head enables driving where it doesn't have sufficient space for wrenches. 3. Ideal for use in confined areas where the head needs to be flush or below the surface. 4. Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry. 5. 10 optional common lengths are enough to meet your daily use. Specifications: Material: 304 Stainless Steel Color: Silver Optional Thread Lengths: 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm Thread Diameter: 3mm (M3) Quantity: 1 x Bag of 100Pcs Hex Socket Screws Weight: 32-186g Type: Button Head Hex Socket Function: Machinery Industry Fastener Package Includes: 1 x Bag of 100Pcs Hex Socket Screws Package List 1304 stainless steel material has good strength of extension and corrosion resistance in many environments 2Button head enables driving where it doesn't have sufficient space for wrenches 3Ideal for use in confined areas where the head needs to be flush or below the surface 4Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry 510 optional common lengths are enough to meet your daily use