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Carmex Thread Turning External Insert - American Butress - Left Hand - 22EL8ABUTK20
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | American Butress |
| Pitch | 8 |
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The ones our customers buy most.Description
The Carmex Thread Turning External Insert for American Butress, Left Hand is a precision cutting insert designed for external threading on left-hand workpieces. Part of our industry-leading range, it delivers reliable performance across a wide range of thread standards for engineers, machinists, and hobbyists alike.
- Broad thread-standards compatibility: The insert covers a wide range of common thread standards, letting you tackle most jobs with a single tool and reducing setup time.
- Laydown triangular geometry for stable cutting: The layout provides smooth chip flow, even engagement, and consistent thread quality across materials.
- Left-hand threading optimization: Specifically designed for left-hand threads, delivering reliable starts, accurate profiles, and repeatable results in challenging materials.
With this insert, you gain faster turnaround times, fewer tool changes, and more consistent thread quality. The robust design supports demanding applications while delivering predictable results, helping your shop improve throughput and part-to-part reliability.
Part Numbers
- Protool Part Number
- 22EL8ABUTK20
- Brand
- Carmex
- Category
- Thread Turning
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.



