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Carmex Thread Mills Mini Type - For Hard Materials - UN (UNC UNF UNEF UNS) - 5/8 x 18 - MT9
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 5/8 |
| Pitch | 18 |
| Diameter (D) | 12 |
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Description
Carmex's Mini Type solid carbide thread mill is engineered for precision internal threading in hardened materials. Designed for shops that demand robust tooling for tough alloys, it delivers reliable performance with a superior surface finish on threaded features.
- Tool Material: Solid carbide construction for exceptional wear resistance and long tool life when threading hard workpieces.
- Thread Forms Supported: Compatible with UN, UNC, UNF, UNEF, and UNS thread standards for versatile applications.
- Size and Shank: 5/8" x 18 thread size with MT9 shank for stable, high-precision engagement in rigid setups.
- Material Capability: Optimized for hardened materials up to 62 HRc, enabling reliable internal threads in demanding alloys.
- Cutting Geometry: Precisely engineered flute geometry to deliver a clean cut with minimal burr formation and consistent pitch.
- Performance and Finish: High-performance design that achieves improved cutting action and an excellent surface finish on threaded holes.
This thread mill is ideal for manufacturers and machinists tackling difficult-to-machine workpieces where accurate internal threads are critical. Expect durable performance, reduced cycle times in hard materials, and dependable thread quality from start to finish, with less need for secondary finishing.
Part Numbers
- Protool Part Number
- MTSH1212D3518UNMT9
- 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 (UNC, UNF) Mini Type For Hard Materials Up To 62HRC (MTSH)
View full collection →You are viewing MTSH1212D3518UNMT9. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTSH03015C672UNMT9 | No. 1 | 72 | 1.06 | 6 | 39 | £129.04 | In Stock | |
| MTSH06012C480UNMT9 | No. 5 | 80 | 0.95 | 4 | 58 | £112.23 | 5 days | |
| MTSH06014C364UNMT9 | No. 1 No. 2 | 64 | 1.19 | 3.8 | 58 | £112.23 | 5 days | |
| MTSH06014C372UNMT9 | No. 1 | 72 | 1.06 | 3.7 | 58 | £112.23 | 5 days | |
| MTSH06016C456UNMT9 | No. 2 No. 3 | 56 | 1.36 | 4.4 | 58 | £112.23 | 5 days | |
| MTSH06016C656UNMT9 | No. 2 No. 3 | 56 | 1.36 | 6.6 | 58 | £112.23 | 5 days | |
| MTSH06019C548UNMT9 | No. 3 No. 4 | 48 | 1.59 | 5.2 | 58 | £112.23 | 5 days | |
| MTSH06021C640UNMT9 | No. 4 | 40 | 1.91 | 6.3 | 58 | £112.23 | In Stock | |
| MTSH06021C840UNMT9 | No. 4 | 40 | 1.91 | 8 | 58 | £112.23 | 5 days | |
| MTSH06024C740UNMT9 | No. 5 No. 6 | 40 | 1.91 | 7 | 58 | £112.23 | 5 days | |
| MTSH06024C940UNMT9 | No. 5 No. 6 | 40 | 1.91 | 9.6 | 58 | £94.86 | 5 days | |
| MTSH06025C1032UNMT9 | No. 6 | 32 | 2.38 | 10.5 | 58 | £112.23 | 5 days | |
| MTSH06025C732UNMT9 | No. 6 | 32 | 2.38 | 7.1 | 58 | £112.23 | 5 days | |
| MTSH06032C1232UNMT9 | No. 8 | 32 | 2.38 | 12.5 | 58 | £112.23 | 5 days | |
| MTSH06032C932UNMT9 | No. 8 | 32 | 2.38 | 9.5 | 58 | £112.23 | 5 days | |
| MTSH06033C936UNMT9 | No. 8 | 36 | 2.12 | 9 | 58 | £112.23 | 5 days | |
| MTSH06035C1024UNMT9 | No. 10 No. 12 | 24 | 3.18 | 10.6 | 58 | £112.23 | 5 days | |
| MTSH06037C1032UNMT9 | No. 10 | 32 | 2.38 | 10.5 | 58 | £112.23 | 5 days | |
| MTSH06037C1532UNMT9 | No. 10 | 32 | 2.38 | 15 | 58 | £112.23 | 5 days | |
| MTSH06042C1128UNMT9 | No. 12 | 28 | 2.72 | 11 | 58 | £112.23 | 5 days | |
| MTSH06047C1420UNMT9 | 1/4 | 20 | 3.81 | 14 | 58 | £112.23 | 5 days | |
| MTSH06047C1920UNMT9 | 1/4 | 20 | 3.81 | 19 | 58 | £112.23 | 5 days | |
| MTSH0605C1428UNMT9 | 1/4 | 28 | 2.72 | 14.5 | 58 | £112.23 | 5 days | |
| MTSH0605C1928UNMT9 | 1/4 | 28 | 2.72 | 19 | 58 | £112.23 | 5 days | |
| MTSH0606C1718UNMT9 | 5/16 | 18 | 4.23 | 17 | 58 | £112.23 | 5 days | |
| MTSH0606C2318UNMT9 | 5/16 | 18 | 4.23 | 23 | 58 | £112.23 | 5 days | |
| MTSH08066C1724UNMT9 | 5/16 3/8 | 24 | 3.18 | 17 | 64 | £149.63 | 5 days | |
| MTSH08066C2424UNMT9 | 5/16 3/8 | 24 | 3.18 | 24 | 64 | £149.63 | 5 days | |
| MTSH08067C2216UNMT9 | 3/8 | 16 | 4.76 | 22 | 64 | £149.63 | 5 days | |
| MTSH08074D3016UNMT9 | 3/8 | 16 | 4.76 | 30.2 | 64 | £149.63 | 5 days | |
| MTSH08077C2514UNMT9 | 7/16 | 14 | 5.44 | 25 | 64 | £149.63 | 5 days | |
| MTSH0808C2520UNMT9 | 7/16 | 20 | 3.81 | 25 | 64 | £149.63 | 5 days | |
| MTSH10092C2713UNMT9 | 1/2 | 13 | 5.86 | 27.5 | 73 | £193.64 | 5 days | |
| MTSH12105C3112UNMT9 | 9/16 | 12 | 6.35 | 31.5 | 84 | £239.90 | 5 days | |
| MTSH12114C3411UNMT9 | 5/8 | 11 | 6.93 | 34.5 | 84 | £239.90 | In Stock | |
| MTSH1212D3518UNMT9 Viewing | 5/8 | 18 | 4.23 | 35 | 84 | £239.90 | 5 days | |
| MTSH16144D4110UNMT9 | 3/4 | 10 | 7.62 | 41.5 | 105 | £299.72 | 5 days |
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