Please log in here to access all benefits, including promotional discounts and faster checkouts.
Carmex Thread Turning Internal and External Insert - UN (UNC,UNF,UNEF,UNS) - Neutral - 22UER/L4.5UNK20
| Thread Type | Internal and External |
| Thread Direction | Neutral |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 4.5 |
| Insert Size | 22U |
| Grade | K20 |
Learn more about Klarna
The Carmex Thread Turning Insert for UN thread standards is a versatile, high-quality cutting insert designed for both internal and external thread turning. Its triangular, laydown geometry helps you create precise UNC, UNF, UNEF, and UNS threads with consistent results across a wide range of materials and applications.
Whether you’re repairing a batch of screws, producing threaded holes in a new part, or seeking repeatable threading performance on production runs, these neutral-grade inserts cover the majority of UN thread standards today—from basic to demanding tasks—without swapping inserts.
- Broad UN thread compatibility: Covers UNC, UNF, UNEF, and UNS threading forms, reducing tool changes and simplifying inventory while delivering reliable results across different materials and finishes.
- Triangular laydown geometry for stable cutting: The laydown design provides solid support and consistent thread profiles for both internal and external turning, helping minimize chatter and improve finish quality.
- High-quality, durable insert for long tool life: Built to perform across a wide range of applications with dependable wear resistance, reducing downtime and rework in demanding machining environments.
These inserts streamline threading operations by enabling a single solution for multiple thread standards, reducing tool changes and delivering repeatable thread quality. The result is faster cycle times, more consistent production outcomes, and confident performance from first cut to last—even on challenging materials and tougher threading tasks.
| Thread Type | Internal and External |
| Thread Direction | Neutral |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 4.5 |
| Insert Size | 22U |
| Grade | K20 |
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.
