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

Carmex Thread Mills Solid Carbide - Fast Type - With Internal Coolant Bore - UN (UNC UNF UNEF UNS) - 5/16 x 24 - MT8

SKU:FMT10066G1424UNMT8

Introducing the Carmex FMT/Fast MT solid carbide thread mill—a high-performance tool designed for rapid, precise threading in metalworking environments. Built for machinists and production floors... Read more ↓
P
M
K
N
S
Thread FormUN (UNC UNF UNEF UNS)
Size5/16
Pitch24
Diameter (D)6.6
View all specifications ↓
Download Cutting Data
£215.78
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

Description

Introducing the Carmex FMT/Fast MT solid carbide thread mill—a high-performance tool designed for rapid, precise threading in metalworking environments. Built for machinists and production floors that demand speed without compromising thread quality, it delivers reliable UNC, UNF, UNEF, and UNS threading in a 5/16-24 size with an MT8 shank.

  • Material: Solid carbide construction for exceptional rigidity and wear resistance across demanding threading tasks.
  • Flute Count: 5–8 flutes to increase material removal rates and shorten cycle times.
  • Internal Coolant Bore: Directs coolant to the cutting edges and aids chip evacuation for better heat management.
  • Shank: MT8 shank design for broad machine compatibility and secure tool retention.
  • Thread Compatibility: Optimized for UNC, UNF, UNEF, and UNS threads; sized at 5/16" diameter with 24 threads per inch (5/16 x 24).
  • Fast Type Geometry: Geometry tuned for high-speed threading that maintains accuracy and finish.

Designed for high-production threading, this tool reduces cycle times, maintains clean, accurate threads, and offers dependable performance under coolant-assisted cutting. The combination of a dense flute arrangement and internal cooling makes it well-suited for demanding applications where fast, repeatable threaded features are essential—whether manufacturing fasteners, fittings, or precision components on steel, aluminum, or other common metals. The MT8 shank and universal thread compatibility simplify tooling setups, helping shops improve uptime and consistency across threaded workpieces.

Part Numbers

Protool Part Number
FMT10066G1424UNMT8
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 Fast Solid Carbide Thread Mills - UN (UNC, UNF, UNEF) - With Internal Coolant Bore (FMT)

View full collection →

You are viewing FMT10066G1424UNMT8. Click any other SKU to view its full details.

Product SKUSizePitchFlute LengthReachShank DiameterOverall LengthPriceStock Order
FMT08048E1220UNMT8 1/42012.112.1864£187.10 5 days
FMT08052F1128UNMT8 1/42811.311.3864£187.10 5 days
FMT10066G1424UNMT8 Viewing5/162414.314.31073£215.78 5 days
FMT1006F1418UNMT8 5/161814.814.81073£215.78 5 days
FMT10074F1616UNMT8 3/81616.716.71073£215.78 5 days
FMT12082G1724UNMT8 3/8 9/16 5/8 11/162417.517.51284£269.98 5 days
FMT12085F2014UNMT8 7/16 7/81422221284£269.98 5 days
FMT12092H2120UNMT8 7/162021211284£269.98 5 days
FMT12098F2413UNMT8 1/21324.424.41284£269.98 5 days
FMT12098H1928UNMT8 7/16 - 1/22820.520.51284£269.98 5 days
FMT14111H2220UNMT8 1/2 3/4 7/8 12022.222.21484£300.30 5 days
FMT16116F2612UNMT8 9/16 11226.526.516105£318.52 5 days
FMT16125H2618UNMT8 9/16 5/8 1 1/16 1 1/81826.126.116105£318.52 5 days
FMT1612F3311UNMT8 5/81133.433.416105£318.52 5 days
FMT20167H3416UNMT8 3/41634.134.120105£349.70 5 days

Other sizes in this range

with tools we think you'll like
All 15 →