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Carmex Thread Mills Carbide Mini Type - G (55 Degree) BSF BSP - G1/4, G3/8 x 19 - MT7

SKU:MTS1010D3019WMT7

The Carmex Carbide Mini Thread Mill is a compact, high-performance tool built for precise internal and external G BSP threads (55-degree) in G1/4 and G3/8 x 19. Designed for deep-hole work and hig... Read more ↓
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Thread FormG (55 Degree) BSF BSP
SizeG1/4 G3/8
Pitch19
Diameter (D)10
Flute Length (l)4.01
Shank Diameter (d)10
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£168.41
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In Stock— only 3 left
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The Carmex Carbide Mini Thread Mill is a compact, high-performance tool built for precise internal and external G BSP threads (55-degree) in G1/4 and G3/8 x 19. Designed for deep-hole work and high-speed milling, it delivers consistent accuracy and long tool life in a single, versatile tool.

  • Carbide Grade & Coating: MT7 sub-micron carbide with a TiAlN multi-layer coating (ISO K10-K20) for exceptional wear resistance and extended tool life.
  • Threading Capability: Produces both internal and external threads with a single tool, covering a wide range of pitches for versatile applications.
  • Thread Form & Sizes: 55° G BSP thread form suitable for G1/4 and G3/8 x 19, aligned with common plumbing and hydraulic standards.
  • Flute Design & Geometry: Spiral flutes provide smooth cutting action; 3–5 flutes reduce machining time and improve chip evacuation in deep holes.
  • Coolant Through Flutes: Through-flutes coolant delivers efficient lubrication and flushing in deep-pocket threading, helping to minimize heat buildup.
  • Speed, Material Range & Durability: Optimized for medium to high cutting speeds across a broad material range, including hardened metals up to 45 HRc; short profile lowers cutting forces and deflection for stable performance.
  • Shank & Fit: MT7 shank design compatible with standard toolholding systems, enabling secure seating and reliable repeatability.

Benefits: This mini thread mill enables fast, accurate threading in tight or deep holes where traditional taps are prone to breakage or where multiple tools would be required. The combination of MT7 carbide with TiAlN coating, a short profile, and multi-flute geometry translates to lower cutting forces, reduced cycle times, and longer tool life across challenging materials. Ideal for manufacturing compact hydraulic fittings, pneumatic components, and precision plumbing parts, it delivers consistent thread quality while simplifying setup and tooling inventory. With its ability to handle a range of pitches and both internal and external threads, it’s a practical, reliable choice for high-precision, high-demand applications.

Thread Form G (55 Degree) BSF BSP
Size G1/4 G3/8
Pitch 19
Diameter (D) 10
Flute Length (l) 4.01
Shank Diameter (d) 10
No of Flutes 4
Overall Length (L) 73
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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