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Carmex Vertical Milling CMT Three Flute Insert - Corner Rounding - C18CR20MT7
| Application | Corner Rounding |
| Internal or External | Internal & External |
| Insert Diameter | 17.8 |
| Radius | 2 |
| Number of Flutes | 3 |
| Holder Code | H5.1 5.2 6 7 8 9 21 22 23 |
Learn more about Klarna
The Carmex Vertical Milling CMT Three Flute Insert with Corner Rounding (C18CR20MT7) is a high-precision, indexable insert designed for vertical milling tasks. Built for engineers, machinists, and production teams, it excels at corners, chamfers, grooves, and threading with consistent accuracy and surface quality.
- Three-flute geometry for stable corner rounding: Delivers smooth cutting action and efficient chip evacuation, producing clean corner radii even at higher feed rates and machining parameters.
- Ground profile for precision under high speeds: Tight tolerances and superior surface finish help reduce secondary finishing and maintain accuracy across demanding milling operations.
- RH/LH threading support with coolant-ready toolholders: The same insert handles both right- and left-hand threads, while toolholders include a Weldon shank and coolant bore for secure clamping and direct coolant delivery, enabling quicker setups and consistent results.
This insert is designed to simplify production workflows by combining versatile threading, grooving, and chamfering capabilities into a single, reliable solution. Its robust clamping and precise geometry help minimize setup time and rework, delivering repeatable performance and dependable results across a range of materials and applications.
| Application | Corner Rounding |
| Internal or External | Internal & External |
| Insert Diameter | 17.8 |
| Radius | 2 |
| Number of Flutes | 3 |
| Holder Code | H5.1 5.2 6 7 8 9 21 22 23 |
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 - Corner Rounding
View full collection →You are viewing C18CR20MT7. Click any other SKU to view its full details.
| Product SKU | Insert Size | Radius | Price | Stock | Order |
|---|---|---|---|---|---|
| C10CR05MT7 | 10 | 0.5 | £25.08 | 5 days | |
| C10CR10MT7 | 10 | 1 | £25.08 | 5 days | |
| C18CR13MT7 | 17.8 | 1.25 | £30.30 | 5 days | |
| C18CR15MT7 | 17.8 | 1.5 | £30.30 | 5 days | |
| C18CR20MT7 Viewing | 17.8 | 2 | £30.30 | 5 days | |
| C25CR30MT7 | 25 | 3 | £35.82 | 5 days |
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