Sandvik STGCR 12CA-16-M CoroTurn 107 TCMT16T3 Turning Toolholder
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The Sandvik Coromant STGCR 12CA-16-M is a new CoroTurn 107 series external turning toolholder with Mtrl ID 5751259, designed for screw-clamped TCMT 16T3 triangular inserts (T = triangle, C = 7° clearance, MT = tolerance/chipbreaker class). Decoding the holder designation: S = shank style (square), T = insert shape (triangular/TCMT), G = clearance angle (7°), C = cutting direction (right-hand), R = right-hand cutting, 12CA = shank size 12 mm square cross-section with CA-type coupling/interface, 16 = insert size 16 (TCMT 16T3), M = CoroTurn 107 module/generation suffix. The body features a precision ground steel shank with black oxide finish, a screw-lock (Torx Plus T15 IP clamp screw included per the visible accessory bag label "5680 084-15, 15 IP Torx Plus C20"), and a 90° lead angle (KAPR 90°) as confirmed by the container label. This holder is suited for longitudinal turning, facing, and contouring operations on CNC lathes accepting 12 mm square-shank toolholders, and is compatible with TCMT 16T3 inserts across the CoroTurn 107 assortment. The kit includes the toolholder body, clamp screw, and Torx Plus key as shown in the accessory photo.
Product Specifications
| Brand | Sandvik Coromant |
| MPN | STGCR 12CA-16-M |
| Material ID | 5751259 |
| Product Series | CoroTurn 107 |
| Insert Shape | Triangular (T) |
| Compatible Insert | TCMT 16T3 |
| Insert Clearance Angle | 7° (C) |
| Lead Angle (KAPR) | 90° |
| Cutting Direction | Right-hand (R) |
| Shank Size | 12 mm square |
| Coupling/Interface | CA (CoroTurn 107 12CA) |
| Clamping Method | Screw clamp (Torx Plus T15 IP) |
| Clamp Screw Included | Yes – 5680 084-15, 15 IP Torx Plus C20 |
| Surface Treatment | Black oxide |
| Condition | New |
| Country of Manufacture | India |