Please log in here to access all benefits, including promotional discounts and faster checkouts.


Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 22IR16UN3MBMA
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 16 |
| Insert Size | 22 |
| Grade | BMA |
Learn more about Klarna
The Carmex Thread Turning Internal Insert (Model 22IR16UN3MBMA) is a versatile cutting tool designed for precision internal threading across multiple UNC, UNF, UNEF, and UNS standards. With a right-hand orientation, it’s well suited for machinists, engineers, and shop professionals who need reliable results from a single insert.
As part of an industry-leading range, this laydown triangular insert is recognized worldwide for its ability to cover the majority of common thread requirements—from basic projects to demanding production runs.
- Broad thread-standard compatibility: Supports UNC, UNF, UNEF, and UNS internal threads, enabling a single insert to handle diverse jobs and reducing tool changes.
- Right-hand orientation for reliable internal threading: Designed for RH operations, it provides stable cutting action and predictable chip flow for clean, accurate threads.
- Triangular laydown geometry for consistent results: The geometry distributes wear evenly and delivers uniform thread quality across longer production runs.
This insert helps you complete internal threads quickly and consistently, improving workflow and reducing downtime. With broad compatibility and dependable performance, it supports a smoother manufacturing process, fewer tool changes, and reliable results across a wide range of applications.
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 16 |
| Insert Size | 22 |
| Grade | BMA |
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 Thread Turning Internal Inserts - Multitooth - Unified - Right Hand
View full collection →You are viewing 22IR16UN3MBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 16IR12UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 16 | BMA | £15.82 | In Stock | |
| 16IR14UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 14 | 16 | BMA | £16.11 | 5 days | |
| 16IR16UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 16 | BMA | £15.82 | 5 days | |
| 16IR18UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 18 | 16 | BMA | £16.11 | 5 days | |
| 16IR20UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 20 | 16 | BMA | £16.11 | 5 days | |
| 22IR12UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 22 | BMA | £25.52 | 5 days | |
| 22IR12UN3MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 12 | 22 | BMA | £25.52 | 5 days | |
| 22IR16UN3MBMA Viewing | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 16 | 22 | BMA | £25.08 | 5 days | |
| 27IR8UN2MBMA | Internal | Right Hand | UN (UNC UNF UNEF UNS) | 8 | 27 | BMA | £32.72 | 5 days |
No products match your filters.