Complete Specifications: M3 screw set has 200pcs in total, and 25pc of each specification can meet the use of most products. M3 x 3mm, M3 x 4mm, M3 x 5mm, M3 x 6mm, M3 x 8mm, M3 x 10mm, M3 x 12mm, M3 x 14mm
Hexagonal Slot: M3 set screw is a conventional hexagonal screw with a hexagonal head design. The grub screw head is not easy to slip during installation, which makes installation easier, saves time, and improves work efficiency
Blackening Treatment: M3 screw set surface is blackened to enhance the protection of the grub screws. Fearless of wind and rain, the M3 screw is suitable for outdoor use, and the blackening protective layer extends the service life of the grub screw
Carbon Steel Material: M3 screw set is made of 12.9 grade alloy steel, with high hardness and can withstand high intensity rotational force. The grub screw is not easy to deform and crack, and is suitable for heavy industrial machinery
Spiral Thread: M3 screw thread is deep, the force is evenly distributed, and the screw teeth are sharper, so the grub screws not easy to slip during rotation, and the tail section is smooth and flat to prevent injury to the hand during use