Uxcell M3 X 16Mm Metric Hex Socket Countersunk Flat Head Screw Bolts Black 50PCS
10.9 Alloy Steel Material, 0.5mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws M3 x 16mm.Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness.It is widely used in industrial.