280Pcs M3 Head Hexagon Socket Screw Nut Set, Black Socket Head Screw, Length 4/5/6/8/10/12/16/20/25mm

280Pcs M3 Head Hexagon Socket Screw Nut Set, Black Socket Head Screw, Length 4/5/6/8/10/12/16/20/25mm

• GRADE 12.9 ALLOY STEEL: Made of grade 12.9 alloy steel, the is oxidized and has good extension strength and in many environments.
• HIDDEN HEAD: The head cover can be driven when there is not enough space to accommodate the wrench, and it can also be fixed without using the tool box.
• APPLICATION: Socket head screws can be used as fasteners for home office equipment, communication equipment, ship assembly or other machinery industries to meet your various needs.
• THREAD LENGTH: 4mm (20Pcs), 5mm (20Pcs), 6mm (20Pcs), 8mm (20Pcs), 10mm (20Pcs), 12mm (20Pcs), 16mm (20Pcs), 20mm (20Pcs), 25mm (20Pcs). The package includes about 180 screws and 100 nuts.
• USE ON A FLAT Use it in a confined area below the where the head needs to be flattened to fix the target.