Looking to create screw threads in solid substances, Tools Plus has a huge selection of Irwin Taps and Die Threading Tools. Whether you are looking for Fractional, Metric, Machine or pipe, Irwin (formerly Hanson), is the department to shop.
History of the Tap and Die: Modern Taps and Dies are routinely made of metal, however, this was not the case long ago when woodworking tools were employed to fashion very large wooden bolts and nuts for use in winches, windmills and watermills. The wooden parts would just be replaced as the loads grew even heavier, bigger and stronger bolts were needed to resist breakage. This evolutionary development eventually led to a complete replacement of wood parts with metal parts of identical measure.