Page 854 - Ceratizit Catalog

TC - thread turning
C249
Recommended values for depth and number of cuts

Full profile

Metric ISO 60° external threads

Pitch [mm] 0,5 0,75 1,0 1,25 1,5 1,75 2,0 2,5 3,0 3,5 4,0 4,5 5,0

4 4 5 5 6 7 8 9 10 10 12 12 12
Number of cuts ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
6 7 8 9 10 11 12 14 18 18 20 20 20

Thread profile height 0,32 0,48 0,64 0,80 0,95 1,10 1,26 1,58 1,89 2,21 2,53 2,84 3,16

These are recommended values for steel machining

Metric ISO 60° internal threads

Pitch [mm] 0,5 0,75 1,0 1,25 1,5 1,75 2,0 2,5 3,0 3,5 4,0 4,5 5,0

4 4 5 5 6 7 8 9 10 10 12 12 12
Number of cuts ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
6 7 8 9 10 11 12 14 18 18 20 20 20

Thread profile height 0,30 0,45 0,59 0,74 0,89 1,02 1,17 1,46 1,76 2,02 2,35 2,64 2,93

These are recommended values for steel machining

Whitworth 55° external and internal threads

Parting and grooving / Technical information
Pitch [passes/inch] 28 26 24 20 19 18 16 14 12 11 10 9 8 7 6 5

5 5 5 5 6 6 7 8 9 9 10 10 10 12 12 12
Number of cuts ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
8 8 9 9 10 10 11 12 14 14 17 18 18 20 20 20

Thread profile 0,60 0,65 0,70 0,84 0,88 0,93 1,05 1,20 1,40 1,53 1,68 1,87 2,11 2,41 2,81 3,37
height

These are recommended values for steel machining