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Carmex Thread Mills Carbide - Through Coolant (Flutes) - Whitworth BSW BSF - 1/4, 3/8 x 20 - MT7
| Thread Form | Whitworth BSW BSF |
| Size | 1/4 3/8 |
| Pitch | 20 |
| Diameter (D) | 4.6 |
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Description
The Carmex MTZ Through-Coolant Carbide Thread Mills are precision tools designed for Whitworth threading in through-hole applications. Built for reliability and consistency, they deliver coolant right to the cutting edge for smooth, efficient thread milling even in challenging setups.
- Through-Coolant Delivery: coolant travels through the flutes directly to the cutting edge, improving heat management and extending insert life during threading.
- Carbide Construction: hard, wear-resistant carbide body provides long tool life and durable performance in tough materials.
- Thread Type: engineered for Whitworth BSW and BSF threads with a 1/4" or 3/8" diameter and 20 TPI, enabling standard Whitworth applications in a single tool.
- MT7 Shank: compatible with common MT7 tool holders for quick setup and stable accuracy on a wide range of CNC machines.
- Flute Geometry for Thread Milling: optimized flute design supports clean chip evacuation and precise thread formation in through-holes.
- Direct Chip Removal in Through-Hole Machining: through-hole threading benefits from efficient chip removal, reducing re-cutting and improving surface finish.
- Machine Compatibility: effective even on machines without external coolant systems, thanks to through-flute coolant delivery and robust carbide design.
Designed to meet the demands of precision threading in manufacturing and repair environments, these tools deliver consistent thread pitch, smooth finish, and reliable performance across through-hole projects. Whether you’re retrofitting older equipment or optimizing a modern CNC cell, the MTZ Through-Coolant Thread Mills offer a focused, practical solution for high-quality Whitworth threads with minimal setup fuss and downtime.
Part Numbers
- Protool Part Number
- MTZ06046C1220WMT7
- 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 Solid Carbide Thread Mills - Whitworth - With Internal Coolant Through The Flutes (MTZ)
View full collection →You are viewing MTZ06046C1220WMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| MTZ06046C1220WMT7 Viewing | 1/4 3/8 | 20 | 12.1 | 12.1 | 58 | £139.46 | In Stock | |
| MTZ06053C1418WMT7 | 5/16 7/16 | 18 | 14.8 | 14.8 | 58 | £139.46 | In Stock | |
| MTZ08068C1616WMT7 | 3/8 | 16 | 16.7 | 16.7 | 64 | £181.61 | 5 days | |
| MTZ08078D2014WMT7 | 7/16 5/8 - 11/16 | 14 | 20.9 | 20.9 | 64 | £181.61 | 5 days | |
| MTZ10086D2412WMT7 | 1/2 3/4 - 13/16 | 12 | 24.4 | 24.4 | 73 | £210.25 | 5 days | |
| MTZ10092D2416WMT7 | 1/2 - 9/16 | 16 | 24.6 | 24.6 | 73 | £210.25 | 5 days | |
| MTZ12109D2811WMT7 | 5/8 7/8 | 11 | 28.9 | 28.9 | 84 | £260.92 | 5 days |
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