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Carmex Thread Mills Solid Carbide - With Through Coolant - UN (UNC UNF UNEF UNS) - 5/16 x 18 - MT7
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 5/16 |
| Pitch | 18 |
| Diameter (D) | 6 |
| Flute Length (l) | 20.5 |
| Shank Diameter (d) | 6 |
Learn more about Klarna
Carmex MTB Solid Carbide Thread Mills with Through Coolant are designed for precise UNC/UNF/UNEF threaded holes in hard metals, offered here in a 5/16-18 size with MT7 shank for reliable milling compatibility.
- Through-Coolant Bore: Coolant flows through the bore to evacuate chips and cool the cutting edges, improving hole quality and extending tool life.
- Solid Carbide Construction: Premium durability and edge retention provide consistent, repeatable threading performance across tough materials.
- MT7 Shank: Rugged interface for strong, vibration-resistant mounting on standard milling machines and tools.
- UNC/UNS Thread Compatibility: Precisely sized 5/16-18 threads compatible with common Unified thread standards for reliable fastener integration.
- Optimized Thread Milling Geometry: Engineered to produce clean, accurate threads with reduced burrs and consistent pitch.
The through-coolant capability addresses two critical needs in precision machining: it activates efficient chip removal from the drill path and maintains lower cutting temperatures, which together minimize wear and extend tool life. This leads to fewer rework cycles, steadier hole quality, and higher overall productivity in applications like automotive components, aerospace prototypes, and fabrications requiring dependable threaded holes. Ideal for operators who demand consistent thread quality, strong tool rigidity, and long-term cost efficiency from their milling tooling.
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 5/16 |
| Pitch | 18 |
| Diameter (D) | 6 |
| Flute Length (l) | 20.5 |
| Shank Diameter (d) | 6 |
| No of Flutes | 3 |
| Overall Length (L) | 58 |
| Thread Mill Style | Standard + Coolant |
| Internal or External | Internal |
| 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.
Full Range: Carmex Solid Carbide Thread Mills - UN (UNC, UNF, UNEF) - With Through Coolant (MTB)
View full collection →You are viewing MTB0606C2018UNMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTB06032C632UNMT7 | No. 8 No. 10 No. 12 | 32 | 6.8 | 6.8 | 58 | £95.48 | 5 days | |
| MTB06047C1220UNMT7 | 1/4 | 20 | 12.1 | 12.1 | 58 | £95.48 | 5 days | |
| MTB06052C1528UNMT7 | 1/4 | 28 | 15 | 15 | 58 | £114.58 | 5 days | |
| MTB06056C1418UNMT7 | 5/16 | 18 | 14.8 | 14.8 | 58 | £95.48 | 5 days | |
| MTB0605C1128UNMT7 | 1/4 | 28 | 11.3 | 11.3 | 58 | £95.48 | 5 days | |
| MTB0606C1428UNMT7 | 7/16 - 1/2 | 28 | 14.1 | 14.1 | 58 | £95.48 | 5 days | |
| MTB0606C1432UNMT7 | 5/16 | 32 | 14.7 | 14.7 | 58 | £95.48 | In Stock | |
| MTB0606C2018UNMT7 Viewing | 5/16 | 18 | 20.5 | 20.5 | 58 | £114.58 | 5 days | |
| MTB08066C1424UNMT7 | 5/16 | 24 | 14.3 | 14.3 | 64 | £127.18 | 5 days | |
| MTB08067C1616UNMT7 | 3/8 | 16 | 16.7 | 16.7 | 64 | £127.18 | 5 days | |
| MTB08074C2416UNMT7 | 3/8 | 16 | 24.6 | 24.6 | 64 | £152.61 | 5 days | |
| MTB08077C2014UNMT7 | 7/16 | 14 | 20.9 | 20.9 | 64 | £127.18 | 5 days | |
| MTB0808C2120UNMT7 | 7/16 - 1/2 | 20 | 21 | 21 | 64 | £127.18 | 5 days | |
| MTB0808D1832UNMT7 | 3/8 | 32 | 18.7 | 18.7 | 64 | £127.18 | 5 days | |
| MTB0808D2124UNMT7 | 3/8 9/16 - 5/8 | 24 | 20.6 | 20.6 | 64 | £127.18 | 5 days | |
| MTB10085C2814UNMT7 | 7/16 | 14 | 28.1 | 28.1 | 73 | £176.09 | 5 days | |
| MTB10092C2213UNMT7 | 1/2 | 13 | 22.5 | 22.5 | 73 | £146.70 | 5 days | |
| MTB10098D3213UNMT7 | 1/2 | 13 | 32.2 | 32.2 | 73 | £176.09 | 5 days | |
| MTB1010D2220UNMT7 | 1/2 | 20 | 22.3 | 22.3 | 73 | £146.70 | 5 days | |
| MTB12105C2612UNMT7 | 9/16 | 12 | 26.5 | 26.5 | 84 | £183.59 | 5 days | |
| MTB12113D2618UNMT7 | 9/16 5/8 - 1 1/8 1 5/8 | 18 | 26.1 | 26.1 | 84 | £183.59 | 5 days | |
| MTB12114C2811UNMT7 | 5/8 | 11 | 28.9 | 28.9 | 84 | £183.59 | 5 days | |
| MTB12116D3712UNMT7 | 9/16 | 12 | 37 | 37 | 84 | £220.26 | 5 days | |
| MTB1212D3116UNMT7 | 3/4 | 16 | 31 | 31 | 84 | £183.59 | 5 days | |
| MTB1212D3811UNMT7 | 5/8 | 11 | 38.1 | 38.1 | 84 | £220.26 | 5 days | |
| MTB1212E2720UNMT7 | 3/4 - 1 | 20 | 27.3 | 27.3 | 84 | £183.59 | 5 days | |
| MTB16144D3410UNMT7 | 3/4 | 10 | 34.3 | 34.3 | 105 | £216.59 | 5 days | |
| MTB16147E4910UNMT7 | 3/4 | 10 | 49.5 | 49.5 | 105 | £259.88 | In Stock | |
| MTB1616C389UNMT7 | 7/8 | 9 | 38.1 | 38.1 | 105 | £216.59 | 5 days | |
| MTB1616E3714UNMT7 | 7/8 | 14 | 37.2 | 37.2 | 105 | £216.59 | In Stock | |
| MTB1616E4112UNMT7 | 1 - 1 1/2 | 12 | 41.3 | 41.3 | 105 | £216.59 | 5 days | |
| MTB20195D428UNMT7 | 1 | 8 | 42.9 | 42.9 | 105 | £261.57 | 5 days | |
| MTB2020D457UNMT7 | 1 1/8 - 1 1/4 | 7 | 45.3 | 45.3 | 105 | £261.57 | 5 days |
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