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Carmex Thread Mills Carbide Mini Type - G (55 Degree) BSF BSP - G1/2, G7/8 x 14 - MT7

SKU:MTS1212D3714WMT7

Meet the Carmex Thread Mills Carbide Mini Type MT7 – a compact, high‑performance thread milling tool engineered for machinists who require precise G and BSP thread forms in deep holes and across ... Read more ↓
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Thread FormG (55 Degree) BSF BSP
SizeG1/2 G7/8
Pitch14
Diameter (D)12
Flute Length (l)5.44
Shank Diameter (d)12
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£208.58
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5 days estimated lead time — subject to availability
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Meet the Carmex Thread Mills Carbide Mini Type MT7 – a compact, high‑performance thread milling tool engineered for machinists who require precise G and BSP thread forms in deep holes and across a broad range of materials. Designed for internal and external threads with a single cutter, it delivers fast, reliable threading at medium to high cutting speeds.

  • Thread form and sizes: 55° G threads (BSF/BSP) with G1/2 and G7/8×14 sizing, optimized for versatile applications in hard metals and precision assemblies.
  • Carbide grade and coating: MT7 sub‑micron carbide with a Titanium Aluminium Nitride multi‑layer coating (ISO K10–K20) for outstanding wear resistance and extended tool life.
  • Through‑coolant design: Coolant through the flutes enhances chip evacuation and cooling in deep‑hole threading, reducing heat buildup and extending tool life.
  • Flute geometry: Spiral flutes (3–5) deliver smooth cutting action, efficient chip removal, and reduced cutting forces thanks to the short profile.
  • Depth and versatility: Enables machining in deep holes and can produce a wide range of threads and pitches using the same tool, including both external and internal threads.
  • Material capability: General‑purpose performance suitable for all materials, including hardened workpieces up to 45 HRc, with reliable results at higher speeds.
  • Durability and efficiency: Multi‑layer coating and short tool profile provide longer life and shorter machining times, helping you finish jobs faster with fewer tool changes.
  • Practical reliability: Designed to minimize breakage and maintain consistent thread quality across challenging productions and repetitive runs.

This MT7 carbide mini thread mill is a thoughtful choice for engineers and production shops aiming for precise, repeatable threads in hard materials and tight spaces. Its combination of through‑coolant capability, versatile threading options, and durable coating translates to fewer tool changes, cleaner thread finishes, and improved uptime on high‑speed threading tasks.

Thread Form G (55 Degree) BSF BSP
Size G1/2 G7/8
Pitch 14
Diameter (D) 12
Flute Length (l) 5.44
Shank Diameter (d) 12
No of Flutes 4
Overall Length (L) 84
Thread Mill Style Mini Type
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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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.
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Full Range: Carmex Carbide Thread Mills - G55° BSW,BSP Mini Type (MTS)

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