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Published: 05/10/2018

How to Cut and Thread Conduit


To successfully cut and thread conduit, the following items/tools may be required:

  • Vice
  • Pencil or Marker
  • Collets
  • Hacksaw
  • Reamer
  • Tape Measure
  • Electric Threading Tool or Ratchet & Handle
  • Die head – specifically designed for the material you will be threading
  • Cutting Lubricant
  • Eye Protection
  • Gloves
It is important to note the following instructions are for guidance purposes only. For use of electric threading tools, please refer to the manufacturer’s manual. Do not attempt to work with electrical equipment unless fully trained to do so.

To successfully cut conduit:

  1. Using the tape measure and pencil, mark the conduit at the required length. Make sure you mark the conduit all the way around the circumference of the tube.
  2. Place your collets around the conduit to protect it from abrasion. Ensure enough conduit is left exposed to allow for safe cutting and threading.
  3. Place the pipe/collets in the vice; tighten so the conduit cannot turn.
  4. Put on your Eye Protection & Gloves.
  5. Using your hacksaw, cut through the conduit at the marked length. Remember, let the saw work for you. Do not force it. For best results use copious amounts of cutting fluid and long slow strokes to cut through the conduit. Continue until you have almost cut through the section.
  6. Support the free section of conduit taking care when making the final cuts.
The conduit will need re-threading to allow use with couplings, locknuts and bushes. There are numerous methods of threading. The traditional method includes using a ratchet & handle with the appropriate dies to form the thread. However, modern electronic threading tools are now widely available.

Either method of threading is acceptable and will achieve the required results.

To thread your conduit using a ratchet & handle:

  1. Place the collets around the conduit to protect it from abrasion.
  2. Place the pipe/collets in the vice, tighten so the conduit cannot turn.
  3. Inspect the dies to make sure they are sharp and free of damage.
  4. Attach the die head to the conduit. Using the heel of your hand, apply a little force to secure the connection.
  5. Put on your Eye Protection & Gloves.
  6. Apply cutting lubricant to the conduit to help maintain a clean cut and reduce friction.
  7. Using your ratchet & handle, turn the dies 3-4 short strokes in the clockwise direction.
  8. Take one anticlockwise reverse stroke to ensure a clean thread.
  9. Repeat steps 6 to 8 until you achieve the correct length of thread.
  10. Remove the ratchet, handle and die head.
Once the threading is complete, you must ensure you de-burr the conduit. We recommend using a reamer to do so.

If you require any more information to assist you with all aspects of your installation, please don’t hesitate to contact us.