One of our Russian customers ordered 100,000 pcs of M2.6x12mm self-tapping screws with Torx drive type, which have been finished.
They were packed in PE bags and double corrugated cartons with clear labels.
Self-tapping screws generally refer to pointed, coarse-toothed, hard-wood screws, as well as aluminum and plastic. A special self-tapping screw for metal hole opening is called wiretapping.
Self-tapping screws are used for non-metallic or soft metal without bottom hole and tapping; self-tapping screws are pointed so that they can be "self-tapping"; ordinary screws are flat and have the same thickness.
Self-tapping screws are said: the holes of the drill are holes that do not need to be tapped. The screws used are different from the general ones. The head is pointed, and the teeth are relatively large. It is similar to the chipless tapping. It can be directly screwed in without tapping. Metals and plastics usually use this method.
It can "tapping-drilling, squeezing, pressing" the corresponding threads on the consolidated material by its thread to make it fit closely to each other.