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Carmex Thread Mills Carbide - Through Coolant (Flutes) - Whitworth BSW BSF - 7/16, 5/8 - 11/16 x 14 - MT7

SKU:MTZ08078D2014WMT7

Introducing the Carmex MTZ Through-Coolant Thread Mill—a carbide threading tool designed for through-hole work and Whitworth BSW/BSF threads. With coolant delivered directly through the flutes to... Read more ↓
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Thread FormWhitworth BSW BSF
Size7/16 5/8 - 11/16
Pitch14
Diameter (D)7.8
Flute Length (l)20.9
Shank Diameter (d)8
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£136.21 £181.61
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5 days estimated lead time — subject to availability
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Introducing the Carmex MTZ Through-Coolant Thread Mill—a carbide threading tool designed for through-hole work and Whitworth BSW/BSF threads. With coolant delivered directly through the flutes to the cutting edge, it enables precise, efficient threading even on machines without external coolant systems.

  • Through-Coolant Flutes: Coolant is guided through the tool’s flutes directly to the cutting edge for targeted cooling and effective chip flushing.
  • Carbide Construction: Rugged, wear-resistant solid carbide for long tool life and stable thread geometry under demanding conditions.
  • MT7 Shank: Robust MT7 shank design for secure mounting and broad compatibility with a wide range of CNC toolholders.
  • Whitworth BSW/BSF Thread Forms: Specifically engineered for Whitworth BSW and BSF threading in sizes spanning 7/16" and 5/8" with 11/16"-14 pitch.
  • Through-Hole Thread Milling: Optimized geometry for threading through holes with direct chip removal to maintain uninterrupted cutting progress.
  • Direct Chip Removal & No External Coolant Required: Efficient chip evacuation and cooling that support coolant-less setups, expanding where threading can be performed.

This MTZ tool combines precise thread formation with practical manufacturing benefits: improved surface finish, consistent thread profiles, and higher uptime by simplifying coolant needs and chip management. Ideal for production environments that require reliable Whitworth threading in through-hole components while maintaining flexibility across diverse CNC machines.

Thread Form Whitworth BSW BSF
Size 7/16 5/8 - 11/16
Pitch 14
Diameter (D) 7.8
Flute Length (l) 20.9
Shank Diameter (d) 8
No of Flutes 4
Overall Length (L) 64
Thread Mill Style Standard + Coolant (Flutes)
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.

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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 Solid Carbide Thread Mills - Whitworth - With Internal Coolant Through The Flutes (MTZ)

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