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11EL24UNK20 - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 24 |
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Description
Carmex Thread Turning External Insert is a versatile cutting insert designed for turning external UN-thread standards (UNC, UNF, UNEF, UNS) in left-hand applications. This makes it an ideal choice for engineers, machinists, and shop teams needing a reliable, single-tool solution for a broad range of threading tasks.
The laydown triangular geometry delivers stable seating in the holder and consistent cutting performance across both simple and demanding projects, helping you achieve repeatable results with fewer adjustments.
- Universal UN thread compatibility: Covers UNC, UNF, UNEF, and UNS external thread standards with a single insert family, reducing the need for multiple tools and simplifying inventory.
- Left-hand threading capability: Specifically engineered for left-hand threads, ensuring precise engagement and clean, reproducible results in reverse-turning operations.
- Laydown triangular geometry: Triangular insert profile provides stable seating and efficient cutting action, supporting reliable performance across a wide range of applications from basic to demanding.
This insert helps streamline your threading workflow by delivering consistent results across UN-thread standards in left-handed operations. Its universal design reduces tool changes and inventory, while the robust geometry supports durability and long tool life, minimizing downtime and rework on both simple and complex threading tasks.
Part Numbers
- Protool Part Number
- 11EL24UNK20
- 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.
