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Carmex Thread Mills Carbide Drill Mill - UN (UNC UNF UNEF UNS) - x 24 - MT7

SKU:MTD10066B1524UNMT7

The Carmex Thread Mills Carbide Drill Mill is a high‑efficiency solution for drilling, chamfering, and thread milling in a single operation. Designed for mass production environments, it delivers... Read more ↓
K
N
Thread FormUN (UNC UNF UNEF UNS)
Size5/16
Pitch24
Diameter (D)6.9
Flute Length (l)N/A
Shank Diameter (d)10
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£166.61
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5 days estimated lead time — subject to availability
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The Carmex Thread Mills Carbide Drill Mill is a high‑efficiency solution for drilling, chamfering, and thread milling in a single operation. Designed for mass production environments, it delivers precise UNC/UNF/UNEF/UNS internal threads with consistent quality from first part to last.

  • Two-fluted drill/thread milling cutter: Optimized geometry for simultaneous drilling and thread milling with clean, predictable chip formation.
  • 45° chamfer: Easy thread start and improved thread engagement, reducing setup time and finishing passes.
  • Internal coolant bore: Integrated coolant channel aids cooling and chip evacuation for smoother cuts and longer tool life.
  • MT7 sub‑micron carbide with PVD triple coating: Combines exceptional hardness and toughness with a low-friction, wear‑resistant surface for high performance.
  • Right- and left‑hand internal threads: Flexibility to machine both orientations without tool changes, expanding application versatility.
  • Compatible with blind and through holes: One tool handles a variety of hole depths, eliminating the need for multiple tools.
  • Mass production ready: Reduces cycle times by combining drilling, chamfering, and threading into one operation, cutting setup and handling time.
  • Pack of 24: Economical quantity for consistent supply on busy production floors.

This carbide thread mill is purpose-built for demanding applications where precision thread quality matters as much as throughput. Use it to streamline CNC holemaking in automotive, aerospace, and general manufacturing tasks, where you need reliable internal threads in UN standards while maintaining tight tolerances and smooth surface finish. The tool’s robust coating and substrate design help resist wear in tougher materials, ensuring repeatable results across long production runs.

Thread Form UN (UNC UNF UNEF UNS)
Size 5/16
Pitch 24
Diameter (D) 6.9
Flute Length (l) N/A
Shank Diameter (d) 10
No of Flutes N/A
Overall Length (L) 74
Thread Mill Style Drill Mill + Chamfer + 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.

★★★★★
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 Carbide Thread Mills - MT Drill UNF (MTD)

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