280Pcs M3 Hex Socket Head Cap Screw Bolt Nut Assortment Set Alloy Steel Socket Head Cap Screws with Storage Box

These cap head hex socket screws are made of 12.9 grade alloy steel with oxidation surface, which are resistant to rust and corrosion. There are 9 thread lengths for you to choose from, which can be generally used in home and office appliance, machinery, furniture, etc. We stand behind all of our them with a 100% product guarantee and promise to give you the best in customer care!  Specifications: Material: 12.9 Grade Alloy Steel Color: Black Screw Thread Lengths: 4mm(20Pcs), 5mm(20Pcs), 6mm(20Pcs), 8mm(20Pcs), 10mm(20Pcs), 12mm(20Pcs), 16mm(20Pcs), 20mm(20Pcs), 25mm(20Pcs) Thread Diameter: 3mm (M3) Box Size: 13 × 6.5 × 2.3cm / 5 × 2.6 × 0.9inch Quantity: 1 × Box of 180Pcs Screws + 100Pcs Nuts Package Weight: 228g Type: Cap Head Hex Socket Screw Function: Fastener  Package Includes: 180 × Screws 100 × Nuts Note: 934 on the box lable is abbreviated from DIN934, which means cap head hex socket nut.