What are some uses for a tap and die table chart?

Use a tap and die chart to calculate the proper thread counts and pitches for specific sizes of tap drills. A die makes threads on metal rods or other pieces, allowing them to be screwed into holes, while a tap makes the matching threaded holes.

With a tap and die set, threaded screws and bolts that are worn or stripped can be fixed, and new connectors can be made. Use a tap and die chart by looking up the size of the tap or the diameter of the hole, then check the threads per inches, or TPI, and the pitch, or angle, of the threads in millimeters to set the die.