M4 x 10mm Metric Hex Socket Countersunk Head Screw Bolts Black 100PCS
Description:10.9 Alloy Steel Material, 0.7mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws M4 x 7mm.Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness.It is widely used in industrial.