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Carmex Thread Mills Solid Carbide - With Through Coolant - NPT - 1/4 - 3/8 x 18 - MT7
| Thread Form | NPT |
| Size | 1/4 - 3/8 |
| Pitch | 18 |
| Diameter (D) | 10 |
| Flute Length (l) | 16.2 |
| Shank Diameter (d) | 10 |
Learn more about Klarna
Carmex MTB solid carbide thread mills deliver precise NPT threading with the reliability you expect from a high‑performance carbide tool. Built for CNC applications, this MT7‑shank mill integrates cutting‑edge through‑coolant technology to keep chips moving and temperatures down, even in deep or hard‑to‑reach bores.
- Through-Coolant Bore: Delivers coolant directly through the tool to the cutting edges for superior cooling and effortless chip evacuation in deep holes.
- Solid Carbide Construction: Combines exceptional hardness and wear resistance with rigidity for repeatable, accurate thread milling in demanding materials.
- MT7 Shank: Provides a robust, high‑rigidity connection to compatible CNC holders for improved stability and tolerance control.
- NPT Thread Milling Range: Optimized for 1/4" to 3/8" nominal NPT threads with 18 TPI, enabling clean, consistent threads in a single operation.
- MTB Line Advantage: A refined thread milling platform that emphasizes cooling efficiency and tool longevity without compromising precision.
The through‑coolant capability reduces heat buildup and helps maintain thread geometry over longer cutting cycles, which translates to fewer tool changes and more consistent thread quality. By enhancing chip clearance and cooling at the point of cut, these mills deliver reliable production performance for parts requiring precise NPT threads—from aerospace housings to hydraulic components—while preserving tool life and reducing overall costs.
| Thread Form | NPT |
| Size | 1/4 - 3/8 |
| Pitch | 18 |
| Diameter (D) | 10 |
| Flute Length (l) | 16.2 |
| Shank Diameter (d) | 10 |
| No of Flutes | 4 |
| Overall Length (L) | 73 |
| Thread Mill Style | Standard + Coolant |
| 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 - With Through Coolant (MTB)
View full collection →You are viewing MTB1010D1618NPTMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MTB08076C1027NPTMT7 | 1/8 | 27 | 10.8 | 10.8 | 8 | 64 | £127.18 | 5 days | |
| MTB1010D1618NPTMT7 Viewing | 1/4 - 3/8 | 18 | 16.2 | 16.2 | 10 | 73 | £146.70 | 5 days | |
| MTB16155D2214NPTMT7 | 1/2 - 3/4 | 14 | 22.7 | 22.7 | 16 | 105 | £216.59 | 5 days | |
| MTB2020D2911.5NPTMT7 | 1 - 2 | 11.5 | 29.8 | 29.8 | 20 | 105 | £261.57 | In Stock | |
| MTB2020D398NPTMT7 | 2 1/2 + | 8 | 39.7 | 39.7 | 20 | 105 | £261.57 | 5 days |
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