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Carmex Thread Mills Solid Carbide - External - UN (UNC UNF UNEF UNS) - 12mm x 16 - MT7
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 12mm |
| Pitch | 16 |
| Diameter (D) | 12 |
| Flute Length (l) | 21.4 |
| Shank Diameter (d) | 12 |
Learn more about Klarna
Precision external thread milling tool built for metalworking professionals. The Carmex Thread Mills Solid Carbide - External - UN (UNC UNF UNEF UNS) - 12mm x 16 - MT7 is designed to deliver clean, accurate external threads with efficient material removal across a range of standard thread forms.

- Material: Solid carbide construction for rigidity, wear resistance, and long tool life in demanding milling operations.
- Threading capability: External thread milling for UNC, UNF, UNEF and UNS threads with precise dimensional control.
- Spiral flute geometry: Spiral flutes optimize cutting action to produce an exceptionally smooth surface finish on threaded features.
- Multi-flute design: 3–5 flutes maximize material removal while maintaining good chip control and surface integrity.
- Size & shank: 12 mm cutting diameter, 16 mm length, MT7 shank for compatibility with a wide range of high-speed milling centers.
In practice, this tool reduces the need for secondary finishing steps and minimizes setup time thanks to its robust carbide build and efficient flute geometry. Expect consistent thread quality, tight tolerances, and repeatable results across lots, making it an excellent choice for automotive components, machinery housings, and precision assemblies where reliable threads matter.
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 12mm |
| Pitch | 16 |
| Diameter (D) | 12 |
| Flute Length (l) | 21.4 |
| Shank Diameter (d) | 12 |
| No of Flutes | 4 |
| Overall Length (L) | 84 |
| Thread Mill Style | Standard |
| Internal or External | External |
| Coating | MT7 |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: Carmex Solid Carbide Thread Mills - UN (UNC/UNF/UNEF) - For External Thread (MT)
View full collection →You are viewing EMT1212D2116UNMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| EMT1010D1624UNMT7 | 10mm | 24 | 16.4 | 16.4 | 10 | 73 | £196.16 | 5 days | |
| EMT1212D2012UNMT7 | 12mm | 12 | 20.1 | 20.1 | 12 | 84 | £245.38 | 5 days | |
| EMT1212D2014UNMT7 | 12mm | 14 | 20.9 | 20.9 | 12 | 84 | £245.38 | 5 days | |
| EMT1212D2018UNMT7 | 12mm | 18 | 20.5 | 20.5 | 12 | 84 | £245.38 | 5 days | |
| EMT1212D2116UNMT7 Viewing | 12mm | 16 | 21.4 | 21.4 | 12 | 84 | £245.38 | 5 days | |
| EMT1212E2120UNMT7 | 12mm | 20 | 21 | 21 | 12 | 84 | £245.38 | 5 days |
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