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Carmex Vertical Milling CMT Three Flute Insert - Threading - C258NPTMT7
| Application | Threading |
| Thread Form | NPT |
| Internal or External | Internal & External |
| Insert Diameter | 25 |
| Pitch | 8 |
| Number of Flutes | 3 |
Learn more about Klarna
The Carmex Vertical Milling CMT Three Flute Insert - Threading (C258NPTMT7) is a versatile vertical milling insert designed to handle threading, grooves, chamfers and more. It’s built for engineers, machinists, and hobbyists who need reliable, repeatable results in demanding milling tasks with high surface quality. Ground-profile inserts deliver high precision and excellent performance, and a solid clamping method ensures full repeatability. The same insert can be used for right- or left-hand threads, and the toolholders include a Weldon shank and coolant bore. Chamfer inserts are also available.
- Ground-profile inserts for precision and performance: Precise geometry delivers accurate threads, grooves, and chamfers with a smooth finish, even at higher cutting parameters.
- One insert for both right- and left-hand threads: Simplifies procurement and setup, reducing inventory and speeding program changes.
- Toolholders with Weldon shank and coolant bore: Secure, repeatable clamping paired with integrated coolant delivery for consistent results and easier tool changes.
Together, these features empower you to complete threading, grooves, and chamfers with confidence—improving consistency, reducing downtime, and helping you achieve reliable, quality results across a range of milling tasks.
| Application | Threading |
| Thread Form | NPT |
| Internal or External | Internal & External |
| Insert Diameter | 25 |
| Pitch | 8 |
| Number of Flutes | 3 |
| Holder Code | H10 11 24 25 |
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 Vertical Milling CMT Single Flute Inserts - NPT Partial Profile 60°
View full collection →You are viewing C258NPTMT7. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| C1018NPTMT7 | 10 | 18 | £29.64 | In Stock | |
| C1814NPTMT7 | 15.8 | 14 | £34.96 | 5 days | |
| C2511.5NPTMT7 | 25 | 11.5 | £36.84 | In Stock | |
| C258NPTMT7 Viewing | 25 | 8 | £36.84 | In Stock |
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