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Carmex Thread Mills Solid Carbide - Internal & External Thread - NPT - 1/4, 3/8 x 18 - MT7
| Thread Form | NPT |
| Size | 1/4 3/8 |
| Pitch | 18 |
| Diameter (D) | 8 |
| Flute Length (l) | 14.8 |
| Shank Diameter (d) | 8 |
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Carmex MT solid carbide thread mills are designed for reliable, cost‑effective threading on CNC mills and lathes. Perfect for shops that need precise NPT threads on both internal and external features, these tools deliver consistent results from startup to finish.
- Solid carbide construction: provides rigidity, wear resistance, and long tool life for demanding threading jobs.
- Internal & external threading: capable of milling NPT threads on both inside bores and outside surfaces in a single setup.
- Thread sizes: available for 1/4" and 3/8" diameter workpieces with 18 threads per inch (NPT).
- Flute count: multiple flutes (3–5) optimize chip evacuation and cutting stability for clean, accurate threads.
- Coated cutting edges: engineered coatings reduce wear and improve surface finish during extended machining sessions.
- MT7 shank: compatible with a wide range of milling tools and holders, delivering broad machine compatibility.
- Cost‑effective threading solution: optimized design minimizes cycle times and tool‑cost per thread without sacrificing accuracy.
The MT line focuses on delivering precise thread profiles with predictable performance, making it a practical choice for production runs, prototyping, and repair work. By combining solid carbide durability with a multi‑flute design, these thread mills help you achieve smooth threads, fewer passes, and quicker setups—ultimately supporting higher throughput and reliable thread quality across common NPT applications.
| Thread Form | NPT |
| Size | 1/4 3/8 |
| Pitch | 18 |
| Diameter (D) | 8 |
| Flute Length (l) | 14.8 |
| Shank Diameter (d) | 8 |
| No of Flutes | 3 |
| Overall Length (L) | 64 |
| Thread Mill Style | Standard |
| Internal or External | Internal & 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 - NPT - For Internal & External Thread (MT)
View full collection →You are viewing MT0808C1418NPTMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MT0606C927NPTMT7 | 1/16 1/8 | 27 | 9.9 | 9.9 | 58 | £86.80 | In Stock | |
| MT0808C1418NPTMT7 Viewing | 1/4 3/8 | 18 | 14.8 | 14.8 | 64 | £115.62 | In Stock | |
| MT1212D2014NPTMT7 | 1/2 3/4 | 14 | 20.9 | 20.9 | 84 | £166.90 | In Stock | |
| MT1616D2711.5NPTMT7 | 1 - 2 | 11.5 | 27.6 | 27.6 | 105 | £196.90 | 5 days | |
| MT2020D398NPTMT7 | 2 1/2 + | 8 | 39.7 | 39.7 | 105 | £237.79 | In Stock |
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