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Carmex Thread Mills Long Reach Through Coolant - UN (UNC UNF UNEF UNS) - x 16 - MT7

SKU:MTQ2020F5816UNMT7

The Carmex Long Reach Through-Coolant Thread Mills (MT7) are precision tools engineered to thread medium to large sizes in deep pockets and base-level work features. Designed to handle UNC, UNF, ... Read more ↓
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Thread FormUN (UNC UNF UNEF UNS)
SizeN/A
Pitch16
Diameter (D)20
Flute Length (l)36.5
Shank Diameter (d)20
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£178.34 £237.79
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5 days estimated lead time — subject to availability
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The Carmex Long Reach Through-Coolant Thread Mills (MT7) are precision tools engineered to thread medium to large sizes in deep pockets and base-level work features. Designed to handle UNC, UNF, UNEF, and UNS thread forms, they deliver reliable performance in challenging setups with a focus on rigidity and accuracy.

  • Thread forms supported: Compatible with UNC, UNF, UNEF, and UNS to cover a wide range of standard thread specifications.
  • Through-coolant capability: Delivers coolant directly through the tool to the cutting edges for improved cooling and chip evacuation.
  • Long reach geometry: Extended reach to access deep pockets and features located at the base of the workpiece without repositioning.
  • Rigid MT7 shank: High-stiffness interface minimizes vibration and maintains tight tolerances under demanding feeds.
  • Short cutting length: Lightweight engagement reduces cutting forces, enhancing stability when using overhangs.
  • Thread length up to 3D: Enables longer threads in a single setup, boosting productivity and reducing tool changes.
  • Overhang-ready design: Optimized for setups with tool overhangs, expanding where and how you can thread.

These features combine to deliver precise thread profiles with consistent geometry, even in deep or base-of-pocket locations. The through-coolant design supports long, uninterrupted cuts by improving heat management and chip clearance, helping sustain thread quality across production runs. With the MT7 platform’s rigidity and efficient cooling, you can achieve higher cutting speeds and feeds, shorter cycle times, and reliable performance on a variety of metalworking applications.

Thread Form UN (UNC UNF UNEF UNS)
Size N/A
Pitch 16
Diameter (D) 20
Flute Length (l) 36.5
Shank Diameter (d) 20
No of Flutes 6
Overall Length (L) 105
Thread Mill Style Long Reach + Coolant
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.

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Staff are very helpful and interested in providing a good service making us the customer feel valued.
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honest about stock and prices are competitive.
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Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
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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.
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Full Range: Carmex Carbide Thread Mills - UN - With Relieved Neck & Internal Coolant Bore (MTQ)

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