Products
CNC TURNING INSERT NOMENCLATURE
Turning
Shape (e.g. "CNMG432" / "CCMT32.51") (close window)
| Code Letter | Description | Diagram | Nose Angle |
| A | 85° parallelogram | | 85° |
| B | 82° parallelogram | | 82° |
| C | 80° diamond | | 80° |
| D | 55° diamond | | 55° |
| E | 75° diamond | | 75° |
| H | hexagon | | 120° |
| K | 55° parallelogram | | 55° |
| L | rectangle | | 90° |
| M | 86° diamond | | 86° |
| N | 55° parallelogram | | 55° |
| O | octagon | | 135° |
| P | pentagon | | 108° |
| R | round | | full radius |
| S | square | | 90° |
| T | triangle | | 60° |
| V | 35° diamond | | 35° |
| W | trigon | | 80° |
| X | sp. parallelogram | | 85° |
Clearance or Relief Angle (e.g. "CNMG432" / "CCMT32.51") (close window)
| Code Letter | Angle | Diagram |
| N | 0° | |
| A | 3° | |
| B | 5° | |
| C | 7° | |
| P | 11° | |
| D | 15° | |
| E | 20° | |
| F | 25° | |
| G | 30° | |
Tolerance (e.g. "CNMG432" / "CCMT32.51") (close window)
| Code Letter | Cornerpoint | Thickness | Inscribed | Cornerpoint | Thickness | Inscribed |
| A | .0002" | .001" | .001" | .005mm | .025mm | .025mm |
| C | .0005" | .001" | .001" | .013mm | .025mm | .025mm |
| E | .001" | .001" | .001" | .025mm | .025mm | .025mm |
| F | .0002" | .001" | .0005" | .005mm | .025mm | .013mm |
| G | .001" | .005" | .001" | .025mm | .13mm | .025mm |
| H | .0005" | .001" | .0005" | .013mm | .025mm | .013mm |
| J | .002" | .001" | .002-.005" | .005mm | .025mm | .05-.13mm |
| K | .0005" | .001" | .002-.005" | .013mm | .025mm | .05-.13mm |
| L | .001" | .001" | .002-.005" | .025mm | .025mm | .05-.13mm |
| M | .002-.005" | .005" | .002-.005" | .05-.13mm | .13mm | .05-.15mm |
| U | .005-.012" | .005" | .005-.010" | .06-.25mm | .13mm | .08-.25mm |
Hole / Chipbreaker (e.g. "CNMG432" / "CCMT32.51") (close window)
| Code Letter | Diagram | Hole | Hole Shape | Chipbreaker Type |
| | No |
| None | |
| A | | Yes | Cylindrical | None |
| B | | Yes | 70-90° double countersink | None |
| D |
| Yes | Cylindrical | None |
| E |
| No |
| None |
| F | | No |
| Double-sided |
| G | | Yes | Cylindrical | Double-sided |
| H | | Yes | 70-90° single countersink | Single-sided |
| M | | Yes | Cylindrical, or dbl countersink | Single-sided |
| N | | No |
| None |
| P | | Yes | Cylindrical | Hi-double positive |
| Q |
| Yes | 40-60° double countersink | None |
| R | | No |
| Single-sided |
| S | | Yes | Cylindrical | Hi-double positive |
| T | | Yes | 40-60° double countersink | Single-sided |
| U |
| Yes | 40-60° double countersink | Double-sided |
| W | | Yes | 40-60° double countersink | None |
| Z | | Yes | Cylindrical | Double-sided hi-double positive |
Size (e.g. "CNMG432" / "CCMT32.51") (close window)
| ANSI Code No. | Inscribed Circle Size | ISO Code No. (metric cutting edge length) by shape code letter of insert | |||||||
| decimal in. | fractional in. | C | D | R | S | T | V | W | |
| 0.5 | .0625" | 1/16 |
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| 1.2 (5) | .15625" | 5/32 | S4 | 04 (4mm) | 03 (3mm) | 03 (3mm) | 06 (6mm) |
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| 1.5 (6) | .1875" | 3/16 | 04 (4mm) | 05 (5mm) | 04 (4mm) | 04 (4mm) | 08 (8mm) | 08 (8mm) | S3 |
| 1.8 (7) | .21875" | 7/32 | 05 (5mm) | 06 (6mm) | 05 (5mm) | 05 (5mm) | 09 (9mm) | 09 (9mm) | 03 (3mm) |
| 2 | .25" | 1/4 | 06 (6mm) | 07 (7mm) | 06 (6mm) | 06 (6mm) | 11 (11mm) | 11 (11mm) | 04 (4mm) |
| 2.5 | .3125" | 5/16 | 08 (8mm) | 9mm | 07 (7mm) | 07 (7mm) | 13 (13mm) | 13 (13mm) | 05 (5mm) |
| 3 | .375" | 3/8 | 09 (9mm) | 11 (11mm) | 09 (9mm) | 09 (9mm) | 16 (16mm) | 16 (16mm) | 06 (6mm) |
| 3.5 | .4375" | 7/16 | 11mm | 13mm | 11 (11mm) | 11 (11mm) | 19 (19mm) | 19mm | 7mm |
| 4 | .5" | 1/2 | 12 (12mm) | 15 (15mm) | 12 (12mm) | 12 (12mm) | 22 (22mm) | 22 (22mm) | 08 (8mm) |
| 4.5 | .5625" | 9/16 | 14mm | 17mm | 14 (14mm) | 14 (14mm) | 24mm | 24mm | 9mm |
| 5 | .625" | 5/8 | 16 (16mm) | 19 (9mm) | 15 (15mm) | 15 (15mm) | 27 (27mm) | 27 (27mm) | 10 (10mm) |
| 5.5 | .6875" | 11/16 | 17mm | 21mm | 17 (17mm) | 17 (17mm) | 30mm | 30mm | 11mm |
| 6 | .75" | 3/4 | 19 (19mm) | 23 (23mm) | 19 (19mm) | 19 (19mm) | 33 (33mm) | 33 (33mm) | 13 (13mm) |
| 6.5 | .8125" | 13/16 |
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| 7 | .875" | 7/8 | 22 (22mm) | 27 (27mm) | 22 (22mm) | 22 (22mm) | 38 (38mm) | 38 (38mm) | 15 (15mm) |
| 8 | 1" | 1 | 25 (25mm) | 31 (31mm) | 25 (25mm) | 25 (25mm) | 44 (44mm) | 44 (44mm) | 17 (17mm) |
| 10 | 1.25" | 1-1/4 | 32 (32mm) | 38mm | 31 (31mm) | 31 (31mm) | 54 (54mm) | 54 (54mm) | 21 (21mm) |
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| 1.26" |
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| 32 (32mm) |
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Thickness (e.g. "CNMG432" / "CCMT32.51") (close window)
| ANSI | ISO | Decimal | Fractional | Millimeter |
| .5 (1) | - | 0.03125" | 1/32 | 0.79mm |
| .6 | T0 | 0.040" |
| 1.00mm |
| 1 (2) | 01 | 0.0625" | 1/16 | 1.59mm |
| 1.2 | T1 | 0.078" | 5/64 | 1.98mm |
| 1.5 (3) | 02 | 0.094" | 3/32 | 2.38mm |
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| T2 | 0.109" | 7/64 | 2.78mm |
| 2 | 03 | 0.125" | 1/8 | 3.18mm |
| 2.5 | T3 | 0.156" | 5/32 | 3.97mm |
| 3 | 04 | 0.187" | 3/16 | 4.76mm |
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| 05 | 0.219" | 7/32 | 5.56mm |
| 4 | 06 | 0.25" | 1/4 | 6.35mm |
| 5 | 07 | 0.313" | 5/16 | 7.9mm |
| 6 | 09 | 0.375" | 3/8 | 9.53mm |
| 8 |
| 0.5" | 1/2 | 12.7mm |
Radius (e.g. "CNMG432" / "CCMT32.51") (close window)
| ANSI | ISO | Decimal | Fractional | Millimeter |
| Wiper flat | Wiper flat | Wiper flat | ||
| V | M0 | 0 | 0 | 0 |
| 0.2 | 00 | 0.004" |
| 0.1mm |
| X |
| 0.004" |
| 0.1mm |
| 0 | 00 | 0.004" |
| 0.2mm |
| 0.5 |
| 0.008" |
| 0.2mm |
| Y |
| 0.008" |
| 0.2mm |
| 1 | 04 | 0.016" | 1/64 | 0.4mm |
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| 05 | 0.020" |
| 0.5mm |
| 2 | 08 | 0.031" | 1/32 | 0.8mm |
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| 10 | 0.040" |
| 1.02mm |
| 3 | 12 | 0.047" | 3/64 | 1.2mm |
| 4 | 16 | 0.062" | 1/16 | 1.6mm |
| 5 | 20 | 0.078" | 5/64 | 2mm |
| 6 | 24 | 0.094" | 3/32 | 2.4mm |
| 7 | 29 | 0.109" | 7/64 | 2.9mm |
| 8 | 32 | 0.125" | 1/8 | 3.2mm |