Please log in here to access all benefits, including promotional discounts and faster checkouts.
Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand - 22IL7UNK20
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 7 |
| Insert Size | 22 |
| Grade | K20 |
Learn more about Klarna
The Carmex Thread Turning Internal Insert is a left-hand, internal threading insert designed to cut UN standard threads (UNC, UNF, UNEF, UNS). It belongs to our industry-leading range of thread turning inserts, built to provide reliable performance across a broad set of callouts with a focus on consistency and ease of use.
Designed to suit a wide audience—from engineers and machinists to buyers, tradespeople, and hobbyists—the insert covers the most common UN thread standards and is capable of handling a broad spectrum of threading tasks. Its laydown triangular geometry is optimized to deliver dependable results across basic and more demanding applications.
- Broad UN thread compatibility: Handles UNC, UNF, UNEF, and UNS with a single insert, simplifying setup and reducing tool-change downtime.
- Triangular laydown geometry: A robust shape designed to provide stable cutting and consistent results across internal threading tasks.
- Versatile for basic to demanding applications: Suitable for straightforward holes and more challenging threads, delivering reliable performance across a range of materials and callouts.
This insert helps you complete internal threading tasks with confidence, supporting efficient workflows, repeatable results, and smooth integration into existing processes. Built for reliability and broad compatibility, it’s a dependable choice for shops, job sites, and home workshops alike.
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 7 |
| Insert Size | 22 |
| 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.
