How To Cut A Thread By Hand

It is possible to cut both an external and internal thread without the use of a machine and by hand. This blog will demonstrate two processes. The first process is how to cut an external thread by hand within 5 Simple Steps. Whilst the second process demonstrates how to cut an internal thread by hand within 7 Steps.

Tools Required for External Thread Include:

• Round Die(s)
• Die Stock
• Round Rod
• File/De Burring Blade
• Vice
• Screwdriver (recommended)

Tools Required for Internal Thread Include:

• Hand Tap Pack (Set of 3 Hand Taps)
• Adjustable Tap Wrench
• Jobber Twist Drill Bit(s)
• Countersink(s)

 

HOW TO CUT AN EXTERNAL THREAD

1. File a 45° chamfer to the round rod, which is slightly larger than the thread depth. This will allow a better entry when cutting the thread. It is recommended that the rod is clamped into place throughout this step-by-step process.
   
2. From then, it is time to cut the external thread. Start by placing the Round Die into the Die Stock and clamping it in place. Optionally, cutting spray could be used to improve the quality and service life of the thread cutting tool.
3. Next, attach the Round Die and Die Stock over the round rod.
4. Turn the thread cutting tool two full 360° From there, do one final third turn motion to break chip. Use cutting spray to help ease the process. The result should look as follows.

5. The result should enable the rod to be screwed into its application.

HOW TO CUT AN INTERNAL THREAD

1. Firstly, a hole in the applicational surface is required. Due to the size and diameter of the hole, a Jobber Twist Drill is required. RUKO Shop UK supplies a range of Twist Drill Bits available to purchase. As with the external thread, using cutting spray throughout this process will enhance the service life and surface quality of the hole drilling process.
2. Secondly, the hole will now require a countersinking process to allow better entry for cutting the thread. RUKO Shop UK offers a range of both RUKO and Terrax Countersinks and Countersink Sets and Accessories here.
3. Now begins the process of the internal thread cut. Clamp the Hand Tap into the wrench.
4. Turn the thread cutting tool two full 360° From there, do one final third turn motion to break chip. Use cutting spray to help ease the process. The result should look as follows.
5. Replace the tap with the second tap and repeat the turning process (step 4) again.
6. Now replace the second tap with the third and final tap and repeat the turning process (step 4) again.
7. The result should enable a smooth screw hole within the surface application to allow a screw to fit in place.

For visual aid, check out our YouTube Video demonstrations below for further assistance.

Still Require Assistance? Contact a member of the RUKO Shop UK Team for help.

Thread Cutting Tools such as Hand Taps, Machine Taps, Dies and full sets of Tap and Die Kits are stocked at the RUKO Shop UK. Purchase single items or sets of Tap and Die Tools with Free Next Working Day Delivery on orders over £50.

Check out the RUKO Shop Blog on How To Cut A Thread by Machine!