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Carmex Thread Mills Solid Carbide - With Through Coolant - Whitworth BSW BSF - 5/16 x 18 - MT7
| Thread Form | Whitworth BSW BSF |
| Size | 5/16 |
| Pitch | 18 |
| Diameter (D) | 5.6 |
| Flute Length (l) | 16.2 |
| Shank Diameter (d) | 6 |
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Engineered for precision internal threading, the Carmex MTB solid carbide thread mill with through-coolant delivers reliable Whitworth BSW/BSF performance in a compact 5/16 x 18 size with MT7 shank. Built for machinists who value clean threads, extended tool life, and efficient chip control, it represents a practical upgrade for productive workshop threading.
- Through-Coolant Bore: Delivers coolant directly to the cutting edges, improving chip evacuation and helping maintain stable cutting temperatures.
- Solid Carbide Construction: Provides rigidity and wear resistance for consistent thread forms and longer tool life under demanding milling conditions.
- Whitworth Thread Forms: Precisely engineered for BSW and BSF standard threads, ensuring accurate engagement and reliable fit.
- 5/16 x 18 Size with MT7 Shank: Compatible with common MT7 tool holders, delivering solid rigidity and repeatable performance in a range of machines.
- Internal Thread Milling Capability: Specifically designed to create clean, accurate internal threads in metal parts with a single setup, reducing secondary operations.
- MTB Line Innovation: Builds on Carmex MT technology by integrating through-bore cooling to enhance lifespan and reduce downtime in high-production environments.
By enabling coolant to reach the cutting zone and actively flushing chips away, this thread mill helps you achieve consistent thread quality, tighter tolerances, and longer tool life. It’s an efficient, dependable choice for manufacturing threads in Whitworth standards, ideal for fasteners, housings, and components where robust internal threads are critical.
| Thread Form | Whitworth BSW BSF |
| Size | 5/16 |
| Pitch | 18 |
| Diameter (D) | 5.6 |
| Flute Length (l) | 16.2 |
| Shank Diameter (d) | 6 |
| No of Flutes | 3 |
| Overall Length (L) | 58 |
| Thread Mill Style | Standard + Coolant |
| Internal or External | Internal & External |
| 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 - Whitworth - With Through Coolant (MTB)
View full collection →You are viewing MTB06056C1618WMT7. Click any other SKU to view its full details.
| Product SKU | Size | Pitch | Flute Length | Reach | Shank Diameter | Overall Length | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| MTB06046C1320WMT7 | 1/4 | 20 | 13.3 | 13.3 | 6 | 58 | £95.48 | 5 days | |
| MTB06056C1618WMT7 Viewing | 5/16 | 18 | 16.2 | 16.2 | 6 | 58 | £95.48 | 5 days | |
| MTB08076D1920WMT7 | 3/8 | 20 | 19.7 | 19.7 | 8 | 64 | £127.18 | 5 days | |
| MTB0807D1916WMT7 | 3/8 | 16 | 19.8 | 19.8 | 8 | 64 | £127.18 | 5 days | |
| MTB0808D2214WMT7 | 7/16 | 14 | 22.7 | 22.7 | 8 | 64 | £127.18 | 5 days | |
| MTB10088D2318WMT7 | 7/16 | 18 | 23.3 | 23.3 | 10 | 73 | £146.70 | 5 days | |
| MTB1009D2612WMT7 | 1/2 - 9/16 3/4 - 13/16 | 12 | 26.5 | 26.5 | 10 | 73 | £146.70 | 5 days | |
| MTB1010E2616WMT7 | 1/2 - 9/16 | 16 | 26.1 | 26.1 | 10 | 73 | £146.70 | 5 days | |
| MTB12118E3311WMT7 | 5/8 7/8 | 11 | 33.5 | 33.5 | 12 | 84 | £183.59 | 5 days | |
| MTB14128E3114WMT7 | 5/8 - 11/16 | 14 | 31.8 | 31.8 | 14 | 83 | £204.20 | 5 days | |
| MTB1616E439WMT7 | Standard + Coolant | Whitworth BSW BSF | 7/8 1 1/8 | 9 | 43.7 | 43.7 | £259.88 | 5 days |
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