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Carmex Thread Mills Solid Carbide - Internal Thread - Metric - M27, M28, M30 x 3 - MT7
| Thread Form | Metric |
| Size | M27 M28 M30 |
| Pitch (mm) | 3.0 |
| Diameter (D) | 20.0 |
| Flute Length (l) | 43.5 |
| Shank Diameter (d) | 20 |
Learn more about Klarna
Carmex MT Solid Carbide Internal Thread Mills offer a precise, cost-conscious solution for metric internal threading. Designed for machinists and manufacturing teams, these tools deliver reliable thread quality in a compact, efficient package.
- Flute Count: 3–5 flutes designed to balance strength, chip evacuation, and cutting stability for clean internal threads.
- Material: Solid carbide construction provides rigidity and long tool life for repeated use in metalworking applications.
- Thread Range: Internal metric threads M27×3, M28×3, and M30×3 to handle common machining needs without changing tools.
- Shank/Holder: MT7 Morse-taper shank for secure, quick fitting in compatible milling machines and holders.
- Designed for Efficiency: Optimized geometry targeted at efficient threading, helping reduce cycle times and improve consistency across parts.
These internal thread mills are well-suited for production environments where reliable thread formation, predictable tool life, and cost efficiency matter most. The multi-flute design supports steady cutting action, delivering accurate thread profiles and smooth surfaces in metric threaded holes. With the MT7 shank, you can rely on precise alignment and repeatable results across multiple parts and runs.
| Thread Form | Metric |
| Size | M27 M28 M30 |
| Pitch (mm) | 3.0 |
| Diameter (D) | 20.0 |
| Flute Length (l) | 43.5 |
| Shank Diameter (d) | 20 |
| No Of Flutes | 4 |
| Overall Length (L) | 105 |
| Thread Mill Style | Standard |
| Internal or External | Internal |
| 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 - Metric ISO - For Internal Thread (MT)
View full collection →You are viewing MT2020D433.0ISOMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MT06022C50.5ISOMT7 | M3 M4 | 0.5 | 5.3 | 5.3 | 6 | 58 | £86.80 | 5 days | |
| MT06031C70.7ISOMT7 | M4 | 0.7 | 7.4 | 7.4 | 6 | 58 | £86.80 | 5 days | |
| MT06036C90.8ISOMT7 | M5 | 0.8 | 9.2 | 9.2 | 6 | 58 | £86.80 | In Stock | |
| MT06038C100.5ISOMT7 | M5 | 0.5 | 10.3 | 10.3 | 6 | 58 | £86.80 | In Stock | |
| MT06045C100.75ISOMT7 | M6 M8 | 0.75 | 10.1 | 10.1 | 6 | 58 | £86.80 | 5 days | |
| MT0604C101.0ISOMT7 | M6 M8 | 1 | 10.5 | 10.5 | 6 | 58 | £86.80 | 5 days | |
| MT0604C130.8ISOMT7 | M5 | 0.8 | 13.2 | 13.2 | 6 | 58 | £104.16 | 5 days | |
| MT0604C141.0ISOMT7 | M6 M8 | 1 | 14.5 | 14.5 | 6 | 58 | £104.16 | In Stock | |
| MT06053D100.5ISOMT7 | M6 M8 | 0.5 | 10.3 | 10.3 | 6 | 58 | £86.80 | 5 days | |
| MT0605C130.75ISOMT7 | M6 M8 | 0.75 | 13.1 | 13.1 | 6 | 58 | £104.16 | In Stock | |
| MT0605C141.25ISOMT7 | M8 M10 | 1.25 | 14.4 | 14.4 | 6 | 58 | £86.80 | 5 days | |
| MT0605C191.25ISOMT7 | M8 M10 | 1.25 | 19.4 | 19.4 | 6 | 58 | £104.16 | In Stock | |
| MT0606C121.0ISOMT7 | M9 | 1 | 12.5 | 12.5 | 6 | 58 | £86.80 | In Stock | |
| MT0807C171.5ISOMT7 | M10 M12 | 1.5 | 17.3 | 17.3 | 8 | 64 | £115.62 | In Stock | |
| MT0807C241.5ISOMT7 | M10 M12 | 1.5 | 24.8 | 24.8 | 8 | 76 | £138.72 | 5 days | |
| MT0808C201.75ISOMT7 | M12 | 1.75 | 20.1 | 20.1 | 8 | 64 | £115.62 | In Stock | |
| MT0808C281.75ISOMT7 | M12 | 1.75 | 28.9 | 28.9 | 8 | 76 | £138.72 | 5 days | |
| MT0808D161.0ISOMT7 | M10 | 1 | 16.5 | 16.5 | 8 | 64 | £115.62 | In Stock | |
| MT1010C272.0ISOMT7 | M14 M17 | 2 | 27 | 27 | 10 | 73 | £133.36 | 5 days | |
| MT1010C392.0ISOMT7 | M14 M17 | 2 | 39 | 39 | 10 | 105 | £160.08 | 5 days | |
| MT1010D211.5ISOMT7 | M14 | 1.5 | 21.8 | 21.8 | 10 | 73 | £133.36 | 5 days | |
| MT1212D272.0ISOMT7 | M16 M18 M20 | 2 | 27 | 27 | 12 | 84 | £166.90 | 5 days | |
| MT1212D291.5ISOMT7 | M14 | 1.5 | 29.3 | 29.3 | 12 | 84 | £166.90 | 5 days | |
| MT14128D392.0ISOMT7 | M16 M18 M20 | 2 | 39 | 39 | 14 | 105 | £204.18 | 5 days | |
| MT1414D321.5ISOMT7 | M16 M18 | 1.5 | 32.3 | 32.3 | 14 | 84 | £185.63 | 5 days | |
| MT1414D332.5ISOMT7 | M18 M20 | 2.5 | 33.8 | 33.8 | 14 | 84 | £185.63 | In Stock | |
| MT1414D482.5ISOMT7 | M18 M20 | 2.5 | 48.8 | 48.8 | 14 | 105 | £222.77 | 5 days | |
| MT1616C403.0ISOMT7 | M24 M28 | 3 | 40.5 | 40.5 | 16 | 105 | £196.90 | In Stock | |
| MT1616C583.0ISOMT7 | M24 M28 | 3 | 58.5 | 58.5 | 16 | 120 | £236.27 | 5 days | |
| MT1616F331.5ISOMT7 | M20 | 1.5 | 33.8 | 33.8 | 16 | 105 | £196.90 | 5 days | |
| MT2020D433.0ISOMT7 Viewing | M27 M28 M30 | 3 | 43.5 | 43.5 | 20 | 105 | £237.79 | In Stock | |
| MT2020F412.0ISOMT7 | M26 | 2 | 41 | 41 | 20 | 105 | £237.79 | 5 days |
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