Product DetailProduct Color : Silver GrayMaterial : 304 Stainless steelScrew head type : PhillipsLength: 4 40mmQuantity: 10 100pcsPackage list: according to your choiceFeaturesThe cross self-tapping screws does not need to be useds with the nutsThe Tooth thread is self-tapping, and the triangular tooth self-extrusion screw at the end point is formed.When it is screwed into the hole of plastic metal,the wood or thin iron material, the internal thread is formed.Extrusion and the reliable locking thread connection is formed in the holeNote: Due to manual measurement there may be 1-3mm