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Carmex Thread Mills Solid Carbide - With Through Coolant - UNJ (UNJC UNJF UNJEF UNJS) - 5/16 x 24 - MT7

SKU:MTB08066D1624UNJMT7

Introducing Carmex MTB Through-Coolant Thread Mills—the solid carbide tool designed for high-precision UNJ internal threading. Built for shops that demand consistent chip evacuation and longer to... Read more ↓
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M
K
N
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Thread FormUNJ (UNJC UNJF UNJEF UNJS)
Size5/16
Pitch24
Diameter (D)6.6
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£142.42
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Introducing Carmex MTB Through-Coolant Thread Mills—the solid carbide tool designed for high-precision UNJ internal threading. Built for shops that demand consistent chip evacuation and longer tool life, this through-coolant solution keeps your machining process smooth from start to finish.

  • Through-Coolant Bore: coolant flows through the tool bore to assist chip evacuation and maintain cutting efficiency, reducing heat and improving surface finish.
  • Solid Carbide Construction: rigid, wear-resistant composition for stable threading and repeatable results in demanding applications.
  • UNJ Thread Milling Capability: supports UNJC, UNJF, UNJEF, and UNJS thread forms for versatile internal threading needs.
  • Size and Interface: 5/16 x 24 thread size with an MT7 shank for compatibility with common machining centers and holders.
  • MTB Line Innovation: part of Carmex’s MTB progression, delivering enhanced cooling, durability, and consistent performance in precision threading tasks.
  • Precision Internal Thread Milling: engineered for clean, accurate threads in through-coolant setups, reducing recuts and improving part quality.

The through-coolant design isn’t just about cooling—it actively supports chip control, extends tool life, and enables more stable, productive threading cycles. With UNJ compatibility and a robust solid carbide body, this Carmex MTB thread mill is a reliable choice for precision engineers tackling internal threads in a range of components. The MT7 shank ensures straightforward integration into existing setups, helping you achieve precise thread profiles with fewer runouts and consistent results from part to part.

Part Numbers

Protool Part Number
MTB08066D1624UNJMT7
Brand
Carmex
Category
Thread Mill
Delivery

Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.

Returns

14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.

Technical Support

Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Trade Accounts

Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.

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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Carmex Solid Carbide Thread Mills - UNJ - With Through Coolant (MTB)

View full collection →

You are viewing MTB08066D1624UNJMT7. Click any other SKU to view its full details.

Product SKUSizePitchFlute LengthReachShank DiameterOverall LengthPriceStock Order
MTB06048C1320UNJMT7 1/42013.313.3658£106.94 5 days
MTB06052D1328UNJMT7 1/42813.213.2658£106.94 5 days
MTB0606C1618UNJMT7 5/161816.216.2658£106.94 5 days
MTB08066D1624UNJMT7 Viewing5/162416.416.4864£142.42 5 days
MTB08074D1916UNJMT7 3/81619.919.9864£142.42 5 days
MTB10082D1924UNJMT7 3/82419.619.61073£164.31 5 days
MTB10085D2214UNJMT7 7/161422.722.71073£164.31 5 days
MTB10092D2220UNJMT7 7/16 - 1/22022.222.21073£164.31 5 days
MTB10098D2613UNJMT7 1/21326.426.41073£164.31 5 days
MTB12116D2812UNJMT7 9/161228.628.61284£205.60 5 days

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