Taps and dies are great for cutting new threads or repairing old threads on metals, plastics and other hard materials. Taps cut threads on the inside of holes and dies cut threads on the outside of ...

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 ...

Twist drills do not make accurately sized or good finish holes; a reamer of some type is often used to cut the final size and finish. A reamer will not make the original hole; it will only enlarge a ...

Advanced machine tool and cutting tool technologies reduce the cost and boost the quality of producing internal threads in aerospace materials. The diameter of a thread milling cutter is smaller than ...