Please log in here to access all benefits, including promotional discounts and faster checkouts.

Carmex Vertical Milling CMT Three Flute Insert - Threading - C12N55MT7
| Application | Threading |
| Thread Form | Partial (55° Degree) |
| Internal or External | Internal & External |
| Insert Diameter | 12.2 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
Carmex Vertical Milling CMT Three Flute Insert - Threading - C12N55MT7 is a vertical milling insert designed for threading, grooves, and chamfers. Its ground profile delivers high precision and excellent performance, even at higher machining parameters and with a high-quality surface finish. The solid, accurate clamping enables full repeatability, and the same insert can be used for both right-hand and left-hand threads. Toolholders with Weldon shank and coolant bore support easy setup and cooling, and chamfer inserts are available to expand capabilities.
- Ground profile for high precision: Ground profile inserts deliver tight tolerances and consistent performance for threading and grooving tasks, ensuring accurate results on every pass.
- High-parameter machining with excellent surface finish: Designed to perform at elevated speeds and feeds while maintaining a smooth, high-quality surface finish to reduce finishing work.
- RH/LH threading with solid, repeatable clamping: The same insert handles right- or left-hand threads, and a solid clamping method ensures repeatable results. Toolholders with Weldon shank and coolant bore simplify setup and cooling; chamfer inserts are available to expand capabilities.
This insert is engineered to improve throughput and consistency across a range of vertical milling applications. The precision ground profile and robust clamping translate to repeatable results and better surface finishes, while the universal RH/LH compatibility reduces the need for multiple inserts. When paired with Weldon shank toolholders and coolant bore options, setup is straightforward and cooling helps extend insert life, contributing to lower downtime and more reliable production.
Part Numbers
- Protool Part Number
- C12N55MT7
- Brand
- Carmex
- Category
- Thread Mill
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 - Partial Profile 55° BSP/BSF/BSW
View full collection →You are viewing C12N55MT7. Click any other SKU to view its full details.
No products match your filters.






