Self-tapping screw
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A self-tapping screw is a screw that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended to pr
Two thread-forming self-tapping screws with different heads. The countersunk head has a Pozidriv recess.
Self-tapping screw with flute and type B (blunt) tip
Tap and die
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In the context of threading, taps and dies are two classes of tools used to create or repair screw threads. A tap is used to cut or form the female portion of the mating pair. A die is a cutting tool
Self-tapping screw
…A self-tapping screw is a screw that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended…
Various taps.
A tap and "T" wrench
Various tap handles (wrenches).
A spiral point plug tap ("gun" tap).