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Thread Turning Technical Section
Number of threading passes selection for single point inserts
mm TPI
0.5 48
0.8 32
1.0 24
1.25 20
1.5 16
1.75 14
2.0 12
2.5 10
3.0 8
4.0 6
6.0 4
Pitch:
Number of Passes
3-6 4-7 4-9 6-10 5-11 9-12 6-13 7-15 8-17 10-20 11-22
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. NOTES: Thread Turning Methods
A04-5
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