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Carmex Thread Mills Solid Carbide - Fast Type - With Internal Coolant Bore - UN (UNC UNF UNEF UNS) - 5/8 x 11 - MT8
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 5/8 |
| Pitch | 11 |
| Diameter (D) | 12 |
| Flute Length (l) | 33.4 |
| Shank Diameter (d) | 16 |
Learn more about Klarna
Carmex brings professional-grade threading efficiency with the FMT/Fast MT line—solid carbide thread mills built for high-speed internal threading in UNC, UNF, UNEF, and UNS forms. Designed for production environments, this 5/8" diameter tool with an MT8 shank delivers rapid, reliable thread milling performance from first cut to final pass.
- Tool Type: Solid carbide thread milling tool engineered for durable, precision internal threading.
- Flute Count: High flute count (5–8) to maximize material removal and reduce cycle time.
- Internal Coolant Bore: Integrated coolant passage enhances cooling and chip evacuation for consistent performance.
- Thread Forms Supported: Compatible with UNC, UNF, UNEF, and UNS thread standards.
- Shank: MT8 Morse taper shank for secure tool retention and stable milling in compatible machines.
- Size: 5/8" diameter with 11 threads per inch (5/8-11 UNC) for common coarse-thread applications.
- Material: Premium solid carbide construction for rigidity, wear resistance, and long tool life.
This tool is purpose-built to boost productivity on demanding thread milling tasks. The combination of a dense flute arrangement and an internal coolant bore minimizes heat and debris buildup, enabling cleaner threads, smoother finishes, and fewer tool changes in high-volume production. Its robust carbide core and MT8 shank provide reliable stability across a range of materials, helping machinists achieve consistent thread quality, tighter tolerances, and improved throughput compared with standard milling approaches. Whether replacing taps or threading blind or through-holes, this Carmex mill is designed to deliver precision threading with efficiency.
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 5/8 |
| Pitch | 11 |
| Diameter (D) | 12 |
| Flute Length (l) | 33.4 |
| Shank Diameter (d) | 16 |
| No of Flutes | 6 |
| Overall Length (L) | 105 |
| Thread Mill Style | Fast + Chamfer + Coolant |
| Internal or External | Internal |
| Coating | MT8 |
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.
Full Range: Carmex Fast Solid Carbide Thread Mills - UN (UNC, UNF, UNEF) - With Internal Coolant Bore (FMT)
View full collection →You are viewing FMT1612F3311UNMT8. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| FMT08048E1220UNMT8 | 1/4 | 20 | 12.1 | 12.1 | 8 | 64 | £187.10 | 5 days | |
| FMT08052F1128UNMT8 | 1/4 | 28 | 11.3 | 11.3 | 8 | 64 | £187.10 | 5 days | |
| FMT10066G1424UNMT8 | 5/16 | 24 | 14.3 | 14.3 | 10 | 73 | £215.78 | 5 days | |
| FMT1006F1418UNMT8 | 5/16 | 18 | 14.8 | 14.8 | 10 | 73 | £215.78 | 5 days | |
| FMT10074F1616UNMT8 | 3/8 | 16 | 16.7 | 16.7 | 10 | 73 | £215.78 | 5 days | |
| FMT12082G1724UNMT8 | 3/8 9/16 5/8 11/16 | 24 | 17.5 | 17.5 | 12 | 84 | £269.98 | 5 days | |
| FMT12085F2014UNMT8 | 7/16 7/8 | 14 | 22 | 22 | 12 | 84 | £269.98 | 5 days | |
| FMT12092H2120UNMT8 | 7/16 | 20 | 21 | 21 | 12 | 84 | £269.98 | 5 days | |
| FMT12098F2413UNMT8 | 1/2 | 13 | 24.4 | 24.4 | 12 | 84 | £269.98 | 5 days | |
| FMT12098H1928UNMT8 | 7/16 - 1/2 | 28 | 20.5 | 20.5 | 12 | 84 | £269.98 | 5 days | |
| FMT14111H2220UNMT8 | 1/2 3/4 7/8 1 | 20 | 22.2 | 22.2 | 14 | 84 | £300.30 | 5 days | |
| FMT16116F2612UNMT8 | 9/16 1 | 12 | 26.5 | 26.5 | 16 | 105 | £318.52 | 5 days | |
| FMT16125H2618UNMT8 | 9/16 5/8 1 1/16 1 1/8 | 18 | 26.1 | 26.1 | 16 | 105 | £318.52 | 5 days | |
| FMT1612F3311UNMT8 Viewing | 5/8 | 11 | 33.4 | 33.4 | 16 | 105 | £318.52 | 5 days | |
| FMT20167H3416UNMT8 | 3/4 | 16 | 34.1 | 34.1 | 20 | 105 | £349.70 | 5 days |
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