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Carmex Thread Mills Solid Carbide - Fast Type - With Internal Coolant Bore - UN (UNC UNF UNEF UNS) - 5/8 x 11 - MT8

SKU:FMT1612F3311UNMT8

Carmex brings professional-grade threading efficiency with the FMT/Fast MT line—solid carbide thread mills built for high-speed internal threading in UNC, UNF, UNEF, and UNS forms. Designed for p... Read more ↓
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Thread FormUN (UNC UNF UNEF UNS)
Size5/8
Pitch11
Diameter (D)12
Flute Length (l)33.4
Shank Diameter (d)16
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£318.52
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5 days estimated lead time — subject to availability
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Carmex brings professional-grade threading efficiency with the FMT/Fast MT line—solid carbide thread mills built for high-speed internal threading in UNC, UNF, UNEF, and UNS forms. Designed for production environments, this 5/8" diameter tool with an MT8 shank delivers rapid, reliable thread milling performance from first cut to final pass.

  • Tool Type: Solid carbide thread milling tool engineered for durable, precision internal threading.
  • Flute Count: High flute count (5–8) to maximize material removal and reduce cycle time.
  • Internal Coolant Bore: Integrated coolant passage enhances cooling and chip evacuation for consistent performance.
  • Thread Forms Supported: Compatible with UNC, UNF, UNEF, and UNS thread standards.
  • Shank: MT8 Morse taper shank for secure tool retention and stable milling in compatible machines.
  • Size: 5/8" diameter with 11 threads per inch (5/8-11 UNC) for common coarse-thread applications.
  • Material: Premium solid carbide construction for rigidity, wear resistance, and long tool life.

This tool is purpose-built to boost productivity on demanding thread milling tasks. The combination of a dense flute arrangement and an internal coolant bore minimizes heat and debris buildup, enabling cleaner threads, smoother finishes, and fewer tool changes in high-volume production. Its robust carbide core and MT8 shank provide reliable stability across a range of materials, helping machinists achieve consistent thread quality, tighter tolerances, and improved throughput compared with standard milling approaches. Whether replacing taps or threading blind or through-holes, this Carmex mill is designed to deliver precision threading with efficiency.

Thread Form UN (UNC UNF UNEF UNS)
Size 5/8
Pitch 11
Diameter (D) 12
Flute Length (l) 33.4
Shank Diameter (d) 16
No of Flutes 6
Overall Length (L) 105
Thread Mill Style Fast + Chamfer + Coolant
Internal or External Internal
Coating MT8

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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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 Fast Solid Carbide Thread Mills - UN (UNC, UNF, UNEF) - With Internal Coolant Bore (FMT)

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