SELF TAPPING TAPPER METAL SCREW & WASHER 5.5MM X 19MM BLACK WITH 10MM HEX HEAD X
Hex Head Self Tapping Screws with Washers. 5.5mm x 19mm. 10mm Head Bolt. It is wood drill tail screw, mainly used in steel structure Caigang watt fixed can also be used for fixing the simple construction of the sheet material.