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Carmex Thread Mills Solid Carbide - With Through Coolant - UN (UNC UNF UNEF UNS) - 7/16 - 1/2 x 20 - MT7
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 7/16 - 1/2 |
| Pitch | 20 |
| Diameter (D) | 8 |
| Flute Length (l) | 21 |
| Shank Diameter (d) | 8 |
Learn more about Klarna
The Carmex MTB Thread Mill combines the durability of solid carbide with through-bore coolant, delivering precise internal threads in through-holes. Designed for MT7 tooling and UNC/UNF/UNEF/UNS thread standards, it’s built for machinists who need reliable, repeatable results in demanding metalworking applications.
- Cutting Diameter: 7/16 in
- Thread Size Compatibility: 1/2-20 UNC/UNF/UNEF/UNS
- Shank Compatibility: MT7
- Material: Solid carbide for rigidity and wear resistance
- Through-Coolant: Coolant delivered through the bore to the cutting edges for effective chip evacuation and edge cooling
- Series: MTB line of thread milling tools, built on the MT platform
Through-coolant capability minimizes chip buildup inside the hole and reduces thermal stress on the tool, helping maintain thread accuracy and surface finish. The carbide construction provides long life under high-speed milling, enabling faster feeds and fewer tool changes. Ideal for through-hole threading in automotive, aerospace, and general precision manufacturing, this tool supports tighter tolerances and cleaner threads with fewer passes.
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 7/16 - 1/2 |
| Pitch | 20 |
| Diameter (D) | 8 |
| Flute Length (l) | 21 |
| Shank Diameter (d) | 8 |
| No of Flutes | 3 |
| Overall Length (L) | 64 |
| 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 MTB0808C2120UNMT7. 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 | 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 Viewing | 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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