There are three important aspects that should be considered when determine the best threading method; the thread, the component and machine parameters.

The thread

• External or internal thread
• Through or blind hole
• Thread profile (metric, UN etc.)
• Thread pitch
• Right or left-hand thread
• No. of thread starts
• Tolerance (profile, position)

The component
After analyzing the thread features, look at the component:

• Can the component be fixed securely?
• Chip evacuation issues? Does the material have good chip breaking qualities?
• Component batch size. Mass production of threads may justify an optimized tool to maximize productivity
• Single or multi-start threads

Material

• Component shape
• Machine parameters

Finally take a look at some important machine considerations

• Stability, power and torque requirements, especially for larger diameters
• Component clamping
• Tool position (upside-down can facilitate chip evacuation)
• Thread cycle should be easy to program
• Cutting fluid and coolant