T T | T T | T Triangular shape (\(60^{\circ }\) internal angles) featuring 3 distinct cutting corners. [1, 2] |
C C | C C | C 7° Positive clearance angle to minimize flank friction during entry. [1] |
M M | M M | M Standard precision tolerance class for insert thickness and inscribed circle index. [1, 2] |
T T | T T | T Countersunk cylindrical center hole with a single-sided chip-breaking profile. [1] |
Size / IC 16 (\(16.5\text{ mm}\) cutting edge) [1, 2, 3, 4, 5] | Size / IC 3 (\(3/8\text{ inch}\) Inscribed Circle) [1] | Size / IC The physical diameter of the inner profile circle of the pocket seat. [1, 2] |
Thickness T3 (\(3.97\text{ mm}\) thickness) [1, 2, 3, 4, 5] | Thickness (2.5) (\(5/32\text{ inch}\) thick) [1, 2, 3, 4] | Thickness Vertical height measurement of the solid carbide substrate. [1, 2, 3] |
Corner Radius 08 (\(0.8\text{ mm}\) radius) [1, 2, 3, 4] | Corner Radius 2 (\(2/64\text{ or }1/32\text{ inch}\) radius) [1, 2] | Corner Radius Rounded tip radius engineered to dictate final part surface roughness. |