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Carmex Thread Mills Mini Type - Through Coolant - UN (UNC UNF UNEF UNS) - No. 3, No. 4 x 48 - MT7
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | No. 3 No. 4 |
| Pitch | 48 |
| Diameter (D) | 1.9 |
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Description
Carmex Mini Type thread mills with an internal through-coolant bore are precision solid carbide cutters designed for reliable UN/UNC/UNF/UNEF/ UNS threading. Sized No. 3 and No. 4 with a 48 mm length and MT7 shank, they’re built for tight spaces and demanding production environments.
- Solid carbide construction: High-hardness, wear-resistant cutter designed for accurate, repeatable threads in challenging materials.
- Through-coolant bore: Internal cooling channel delivers high-pressure coolant directly through the tool into the pre-hole, enhancing chip evacuation and edge cooling.
- Thread forms supported: Optimized for UNC, UNF, UNEF, and UNS thread types to cover a broad range of fastening applications.
- Mini MTSB design: Compact geometry engineered for threading in small or confined holes without compromising rigidity.
- Size and interface: No. 3 and No. 4 options, 48 mm overall length, MT7 shank to fit common milling machines and tooling systems.
- Chip control and efficiency: Coolant-assisted cutting helps purge chips during the threading circle, reducing clogging and improving surface finish.
- Edge cooling and tool life: Direct cooling of the cutting edge minimizes heat buildup, contributing to longer tool life and steadier cutting performance.
This through-coolant thread mill delivers cleaner, more consistent threads by combining precise carbide geometry with effective coolant delivery. It’s especially valuable in production settings where rapid chip removal and reliable cooling translate to tighter tolerances, reduced rework, and improved cycle times when threading through holes in metals and alloys.
Part Numbers
- Protool Part Number
- MTSB06019D548UNMT7
- 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.
Full Range: Carmex Carbide Thread Mills - UN Mini Type With Internal Coolant Bore (MTSB)
View full collection →You are viewing MTSB06019D548UNMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTSB06012C480UNMT7 | No. 4 | 80 | 0.95 | 4.9 | 58 | £117.11 | 5 days | |
| MTSB06014C572UNMT7 | No. 1 | 72 | 1.06 | 5.9 | 58 | £117.11 | 5 days | |
| MTSB06016C456UNMT7 | No. 2 No. 3 | 56 | 1.36 | 4.8 | 58 | £117.11 | 5 days | |
| MTSB06016C756UNMT7 | No. 2 No. 3 | 56 | 1.36 | 7 | 58 | £117.11 | 5 days | |
| MTSB06019D548UNMT7 Viewing | No. 3 No. 4 | 48 | 1.59 | 5.6 | 58 | £117.11 | 5 days | |
| MTSB06021D1240UNMT7 | No. 4 | 40 | 1.91 | 12 | 58 | £117.11 | 5 days | |
| MTSB06021D640UNMT7 | No. 4 | 40 | 1.91 | 6.3 | 58 | £117.11 | 5 days | |
| MTSB06021D940UNMT7 | No. 4 | 40 | 1.91 | 9.2 | 58 | £117.11 | In Stock | |
| MTSB06024D740UNMT7 | No. 5 No. 6 | 40 | 1.91 | 7 | 58 | £117.11 | 5 days | |
| MTSB06025D1132UNMT7 | No. 6 | 32 | 2.38 | 11.3 | 58 | £117.11 | 5 days | |
| MTSB06025D732UNMT7 | No. 6 | 32 | 2.38 | 7.8 | 58 | £117.11 | 5 days | |
| MTSB06032D1332UNMT7 | No. 8 | 32 | 2.38 | 13.3 | 58 | £117.11 | 5 days | |
| MTSB06032D932UNMT7 | No. 8 | 32 | 2.38 | 9.1 | 58 | £117.11 | 5 days | |
| MTSB06035D1024UNMT7 | No. 10 No. 12 | 24 | 3.18 | 10.7 | 58 | £117.11 | 5 days | |
| MTSB06035D1524UNMT7 | No. 10 No. 12 | 24 | 3.18 | 15.5 | 58 | £117.11 | 5 days | |
| MTSB06037D1032UNMT7 | No. 10 | 32 | 2.38 | 10.5 | 58 | £117.11 | 5 days | |
| MTSB06037D1532UNMT7 | No. 10 | 32 | 2.38 | 15.3 | 58 | £117.11 | 5 days | |
| MTSB06052D2028UNMT7 | 1/4 | 28 | 2.72 | 20 | 58 | £117.11 | 5 days | |
| MTSB08066D2424UNMT7 | 5/16 3/8 | 24 | 3.18 | 24.9 | 64 | £156.17 | 5 days | |
| MTSB10092E3420UNMT7 | 7/16 1/2 | 20 | 3.81 | 34.6 | 73 | £202.07 | 5 days |
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