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Carmex Thread Mills Solid Carbide - With Through Coolant - NPT - 1/4 - 3/8 x 18 - MT7

SKU:MTB1010D1618NPTMT7

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 integrate... Read more ↓
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Thread FormNPT
Size1/4 - 3/8
Pitch18
Diameter (D)10
Flute Length (l)16.2
Shank Diameter (d)10
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£146.70
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy

Full Range: Carmex Solid Carbide Thread Mills - NPT - With Through Coolant (MTB)

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