Please log in here to access all benefits, including multibuy discounts and faster checkouts.

Carmex Thread Mills Carbide Drill Mill - UN (UNC UNF UNEF UNS) - x 18 - MT7

SKU:MTD10061B1518UNMT7

The Carmex Thread Mills Carbide Drill Mill is a precision multitool engineered for high‑volume internal thread production. It combines drilling, chamfering, and thread milling in a single pass, m... Read more ↓
K
N
Thread FormUN (UNC UNF UNEF UNS)
Size5/16
Pitch18
Diameter (D)6.6
Flute Length (l)N/A
Shank Diameter (d)10
View all specifications ↓
Download Cutting Data
£166.61
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Carmex Thread Mills Carbide Drill Mill is a precision multitool engineered for high‑volume internal thread production. It combines drilling, chamfering, and thread milling in a single pass, making it ideal for shops that require fast, repeatable internal threads in UNC, UNF, UNEF, and UNS forms.

  • Two-fluted drill/thread milling cutter: Performs drilling and thread milling in one operation for streamlined workflows and reduced tool changes.
  • 45° chamfer: Provides an accurate thread start, improving cycle reliability in mass production environments.
  • Internal coolant bore: Delivers coolant directly to the cutting edge to improve chip control and extend tool life.
  • MT7 Sub-Micron carbide grade: Combines exceptional hardness and toughness with a tight, precise microstructure for consistent performance.
  • PVD triple coating: Low-friction, high-performance coating for smooth cutting and longer tool life in demanding materials.
  • Internal threading versatility: Fits both right- and left-hand internal threads, usable for blind and through holes with the same tool.
  • Thread forms supported: Designed to accommodate UNC, UNF, UNEF, and UNS internal threads for flexible applications.
  • High thread surface quality: Delivers reproducible, smooth threads suitable for precision assemblies and functional fits.

Designed for mass production, this tool minimizes cycle times by eliminating tool changes and consolidating multiple operations into one efficient cut. The combination of a robust carbide core, advanced coating, and integrated coolant makes it a reliable choice for challenging materials and high-output environments. Whether you’re equipment‑gating for automotive, aerospace, or general engineering applications, this Carmex thread mill helps you achieve consistent thread integrity with fewer passes and tighter tolerances.

Thread Form UN (UNC UNF UNEF UNS)
Size 5/16
Pitch 18
Diameter (D) 6.6
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 UN (UNC UNF UNEF UNS) (MTD)

View full collection →

You are viewing MTD10061B1518UNMT7. Click any other SKU to view its full details.

Product SKUThread Mill StyleThread FormPitchFinishPriceStock Order
MTD08048B1220UNMT7 Drill Mill + Chamfer + CoolantUN (UNC UNF UNEF UNS)20MT7£137.33 5 days
MTD10061B1518UNMT7 ViewingDrill Mill + Chamfer + CoolantUN (UNC UNF UNEF UNS)18MT7£166.61 5 days
MTD12075B1916UNMT7 Drill Mill + Chamfer + CoolantUN (UNC UNF UNEF UNS)16MT7£211.52 5 days
MTD12088B2114UNMT7 Drill Mill + Chamfer + CoolantUN (UNC UNF UNEF UNS)14MT7£211.52 5 days