Uxcell M3X8Mm 10.9 Carbon Steel Countersunk Head Hex Socket Screw Black 50Pcs
10.9 Carbon Steel Material, 0.5mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws.Countersunk bolts is anti-corrosion,rustless, and high-hardness.It is widely used in industrial.