Insert, CCMT-21.51 Carbide

- Coated carbide
- 80° diamond, 7° relief
- 40°-60° single countersink, single-sided chip breaker
- 0.0156" (1/64") corner radius
- ANSI: CCMT21.51, ISO: CCMT060204
CCMT-21.51 carbide insert is a 80° diamond with a 7° relief. The center hole is a 40°-60° single countersink, and a single-sided chip breaker.
It has an inscribed circle (IC) of 0.25" (1/4"), a thickness of 0.094" (3/32"), and a corner (nose) radius of 0.0156" (1/64").
The insert is designated CCMT21.51 (ANSI) or CCMT060204 (ISO). For a list of compatible LittleMachineShop.com products, see the Compatibility tab.
Inserts are sold individually—no need to buy a pack of 10 inserts.

ANSI CCMT21.51
ISO CCMT060204
Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.
Insert CCMT-21.51
ANSI CCMT21.51
ISO CCMT060204
![]() |
|
Compatibility
This product works with these LittleMachineShop.com products:
- 5607 Boring Bar, 1/2" Indexable, S08M-SCLCR-2, Tormach
- 1779 Boring Bar, 3/8" Indexable
- 5606 Boring Bar, 3/8" Indexable, S06H-SCLCL-2, Tormach
- 5605 Boring Bar, 3/8" Indexable, S06H-SCLCR-2, Tormach
- 3719 Boring Bar, 5/16" Indexable
- 5436 Boring Bar, 5/16" Indexable, S05-SCLCR06, Reduced Neck
- 5435 Boring Bars, Indexable, 80 Deg Diamond Inserts, 3 Piece
- 5612 Chamfer Tool, 3/8" Indexable, SCSCR-06-2J, Tormach
- 5611 Facing Tool, 3/8" Indexable, SCKCR-06-2J, Tormach
- 5613 Profiling Tool, 3/8" Indexable, SCMCN-06-2J, Tormach
- 2431 Profiling Tool, 3/8" Indexable, 35 Deg Diamond Inserts, A R Warner Kit #15
- 3694 Turning & Boring Tools, 3/8" Indexable, HSS Inserts, A R Warner Kit #8
- 5434 Turning & Cut-Off Tools, 3/8" Indexable, 7 Piece Set
- 3693 Turning 1/4" & Boring 3/8" Indexable Tools, HSS Inserts, A R Warner Kit #4
- 5614 Turning and Facing Tool, 3/8" Indexable, SCBCR-06-2J, Tormach
- 5610 Turning and Facing Tool, 3/8" Indexable, SCLCL-06-2J, Tormach
- 5609 Turning and Facing Tool, 3/8" Indexable, SCLCR-06-2J, Tormach