A cheap and effective ratcheting tap. Need to cut threads into a hole? A tool called a tap is what you need, and a hand-operated one like the one shown here to the side is both economical and ...

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...

Collapsible taps have interchangeable tap heads and a common body, and will tap virtually any thread form with the appropriate chaser. Styles include: Model ALTs for straight-thread tapping, Model LLs ...