These screws and nuts sets are made of high quality 304 stainless steel, which provides strength and is commonly used when requiring rust protection properties. There are many length for your choice which can be commonly used in home and office appliance, machinery, furniture, repair and inventions. Features: Made of high quality 304 stainless steel, which provides strength and is commonly used when requiring rust protection properties. Ideal for use in areas where you need hex socket cap head screws. Fixing component, industrial and construction fasteners. 4 options of common sizes and different quantities that you can choose for general purpose use. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Specifications: Material: 304 stainless steel Type: Hex socket cap head Optional Set: A. M3 300pcs B. M5 150pcs C. M6 120pcs D. M8 60pcs Set A Set B Set C Set D Screws M3 x 6mm 25pcs M5 x 10mm 15pcs M6 x 10mm 10pcs M8 x 10mm 5pcs M3 x 8mm 25pcs M5 x 12mm 15pcs M6 x 12mm 10pcs M8 x 12mm 5pcs M3 x 10mm 25pcs M5 x 14mm 15pcs M6 x 16mm 10pcs M8 x 16mm 5pcs M3 x 12mm 25pcs M5 x 16mm 15pcs M6 x 20mm 10pcs M8 x 20mm 5pcs M3 x 14mm 25pcs M5 x 20mm 15pcs M6 x 25mm 10pcs M8 x 25mm 5pcs M3 x 16mm 25pcs M5 x 25mm 15pcs M6 x 30mm 10pcs M8 x 30mm 5pcs Hex Nuts M3 50pcs M5 20pcs M6 20pcs M8 10pcs Flat Washers M3 50pcs M5 20pcs M6 20pcs M8 10pcs Spring Washers M3 50pcs M5 20pcs M6 20pcs M8 10pcs Total 300pcs 150pcs 120pcs 60pcs Package Includes: 1 Set x Screws, Nuts and Washers Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.