TT-221 Grade TNC (TiN Coated) Carbide Insert
Model #: CI-TT-221-TNC
- I.C.: 1/4"
- Radius: .015"
- Thickness: 1/8"
- Hole Diameter: .09"
- Made in USA.
Grade C5 carbide with Titanium Nitride coating for greater wear resistance.
Inserts have positive rake and chipbreaker groove.
Our 3/8" shank indexable lathe turning tool holders use TT-221 or TT-222.
The I.C. dimension is the diameter of a circle that could be drawn within a triangular insert, touching the midpoint of each side.