Page 99 - Carmex - Metric Catalog 2021

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Thread Turning Technical Section

Number of threading passes selection for single point inserts

mm 0.5 0.8 1.0 1.25 1.5 1.75 2.0 2.5 3.0 4.0 6.0
Pitch:
TPI 48 32 24 20 16 14 12 10 8 6 4

Number of 3-6 4-7 4-9 6-10 5-11 9-12 6-13 7-15 8-17 10-20 11-22
Passes
NOTES:
1. For most standard applications the middle of the range is a good starting point.
2. For most materials, the tougher the material, the higher the number of cutting passes you should select.
3. As a general rule of thumb, fewer passes are better than more speed.

Thread Turning Methods

A04-5