First and foremost — Imperial or metric? If you’re buying ... Almost all machines will have a half-nut that clamps to the lead screw for cutting threads. The cheapest machines will also ...

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting ... rapid insertion because nuts are not used and access is ...

A full set (metric and SAE) will quickly put irreplaceable and hard-to-find nuts and bolts back into ... But instead of cutting new threads, they reshape them to original condition.