What are taps and dies used for?

Taps and dies are specialized tools designed specifically for creating threaded holes and fasteners. A tap is used to cut internal threads in a hole so that a screw or bolt can fit securely, while a die is used to cut external threads on a rod to create a bolt or screw. This threading process is crucial for ensuring that nuts and bolts can properly engage with each other to form secure connections in various mechanical applications. Therefore, taps and dies are essential in manufacturing and repairing mechanical components that involve fastening, making this choice the most accurate answer to the question.