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1/4–3/8 x 20 TPI UN Internal 3-in-1 Hardcut Drill Thread Mill 2xD – Carmex DMTH 08048 C15 20 UN MT11
| Thread Form | UN (UNC UNF UNEF UNS) |
| Size | 1/4 - 3/8 |
| Pitch | 20 |
| Diameter (D) | 4.8 |
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Description
Solid carbide thread mill for internal 1/4–3/8 x 20 TPI UN threads. DMTH is the hard-material version of Carmex’s 3-in-1 DMT. It drills the hole, cuts the thread and chamfers the edge in one cycle, and works in steel, hardened steel, stainless and super alloys. It has internal coolant.
This is an internal-only thread mill, and Carmex doesn’t list it for external threads. MT11 is ultra-fine sub-micron carbide with Carmex’s blue PVD triple coating, for hardened steel, stainless and super alloys. Carmex rates this tool for material up to 55 HRc. It’s a left-hand cutting tool, so program the spindle in reverse (M04).
- Carmex code: DMTH 08048 C15 20 UN MT11
- Thread: 1/4–3/8 x 20 TPI, UN – UNC/UNF/UNEF/UNS
- Cutting diameter: Ø4.80 mm
- Flutes: 3
- Cutting length: 15.6 mm
- Overall length: 64 mm
- Shank: Ø8 mm
- Max thread depth: 2×D1 (× nominal diameter)
- Grade: MT11 – PVD triple-coated ultra-fine carbide
- Coolant: Internal coolant
- Cutting direction: Left-hand cutting (M04)
Part Numbers
- Protool Part Number
- DMTH08048C1520UNMT11
- 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 - 3 IN 1 Multifunction For Hard Materials (DMTH)
View full collection →You are viewing DMTH08048C1520UNMT11. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| DMTH06021C740UNMT11 | No. 4 No. 5 No. 6 | 40 | 7 | 6 | 58 | £124.68 | 5 days | |
| DMTH06026C832UNMT11 | No. 6 | 32 | 8.7 | 6 | 58 | £124.68 | 5 days | |
| DMTH08048C1520UNMT11 Viewing | 1/4 - 3/8 | 20 | 15.6 | 8 | 64 | £166.24 | 5 days | |
| DMTH0805C1428UNMT11 | 1/4 - 3/8 | 28 | 14.9 | 8 | 64 | £166.24 | 5 days | |
| DMTH08065D1824UNMT11 | 5/16 - 1/2 | 24 | 18.5 | 8 | 64 | £166.24 | 5 days | |
| DMTH08067C2216UNMT11 | 3/8 - 1/2 | 16 | 22.8 | 8 | 64 | £166.24 | 5 days | |
| DMTH0806D1918UNMT11 | 5/16 - 7/16 | 18 | 19.2 | 8 | 64 | £166.24 | 5 days | |
| DMTH10092C3013UNMT11 | 1/2 | 13 | 30 | 10 | 73 | £215.14 | 5 days | |
| DMTH12114C3711UNMT11 | 5/8 | 11 | 37 | 12 | 84 | £254.92 | 5 days |
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