How to Make Threads on a Steel Rod

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Metal workers and mechanics sometimes need to fabricate a clamping device to fasten two materials together. A tap and die tool set is a common tool used to create threads with metal. A tap set cuts internal threads so a screw or bolt may thread into a hole, whereas a die set cuts external threads so a nut can be threaded onto a rounded metal object. The tap and die set can be used to cut threads in steel, aluminum and other metals used in the construction or automotive industries.

Things You'll Need

  • Bench vise
  • Die set and die wrench
  • Metal file
  • Hexagon nut
  • Cutting fluid
  • Thread gauge
  • Shop towel

Cutting Threads into a Steel Rod

  • Clamp the steel rod into the bench vice securely. Use the metal file to create a beveled surface along the edge of the rounded part of the rod.

  • Measure the gauge of the threads on the hexagon nut using the thread gauge. Depending on the type of nut you are using the threads may either be course or fine and metric or standard. Record the size of the threads by looking at the marking on the side of the gauge.

  • Select the correct die from the die set that correlates with your gauge reading from Step 2. Secure the die into the die wrench by tightening the set screws on both sides of the wrench until the die is firmly seated.

  • Apply cutting fluid to the steel rod. Position the die wrench perpendicular to the steel rod.

  • Turn the die wrench in a clockwise motion as you apply pressure. For every turn of the wrench back it off one-half turn. Continue to turn the die wrench until the required length of steel rod is threaded.

  • Clean the threads with the shop towel to remove any metal shavings and excess cutting fluid.

  • Tighten the hexagon nut onto the new threads of the steel rod. Run the nut the full length of the threads and reverse it back off.

References

  • Photo Credit Hemera Technologies/PhotoObjects.net/Getty Images
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