9.525 × 3.97 × 1.2 mm inserts
Indexable turning inserts whose three key dimensions coincide: inscribed circle d1 = 9.525 mm (0.375 in), thickness s = 3.97 mm (0.156 in), nose radius rε = 1.2 mm (0.047 in). This is the dimension set behind an “equivalent insert” search — read the interchange note before substituting.
4 designations across 2 insert shapes (D, T) share these dimensions.
Equal d1, s and rε alone do not make inserts interchangeable: shape and clearance must match too — a 60° triangular insert and a 55° rhombic insert at the same dimensions cut completely different profiles and seat in different holders. Rows below are grouped by shape; true geometric interchange applies within the same ISO core code across brands, as shown on each model page.
Models at this dimension set
| Model | Shape | Clearance | Tolerance / fixing | Brand offers | |
|---|---|---|---|---|---|
| DCGT11T312 | D 55° rhombic | C · 7° | GT | 4 | Specs → |
| DCMT11T312 | D 55° rhombic | C · 7° | MT | 56 | Specs → |
| TCGT16T312 | T 60° triangle | C · 7° | GT | 3 | Specs → |
| TCMT16T312 | T 60° triangle | C · 7° | MT | 74 | Specs → |
Every value on this page is derived deterministically from the ISO 1832 designation (positions 1–7). Brand ordering codes, chipbreakers and grades with cited sources appear on each linked model page.