Self tapping screws

الوصف

Tapping screws used for metal, nonmetal or softer without a low hole and tapping; Self tapping screw is pointed to "tapping"; Ordinary screw is flat, the thickness is consistent.

Self tapping screw is said: drilling holes for without tapping hole, using different screws and general, head is sharp, tooth pitch is bigger, and a chipless silk attack is a bit like, you can not tapping screw directly into, metal and plastic usually use this method.

It can on the consolidation of the material, by its own thread, body will be consolidation "attack - drill, squeeze, press" give corresponding thread, closely cooperate with each other.