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16IR11UNBLU - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 11 |
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The Carmex Thread Turning Internal Insert is a dedicated cutting insert for internal threading on metal parts. It’s designed for shops and service teams that need reliable internal threads across a range of common standards, including UNC, UNF, UNEF, and UNS, in a right-hand configuration. One insert covers the majority of UN-style threads, reducing tool changes and inventory needs.
The blue-coated, laydown triangular insert delivers stable, controlled cutting action and long tool life in demanding applications. Its geometry is engineered for clean thread profiles and consistent results, even when working with tougher materials or higher feed rates.
- Broad thread-standard compatibility: Covers UNC, UNF, UNEF, and UNS internal threads in a single insert, reducing the need for multiple tools and simplifying setup.
- Long wear life and reliability: Carbide edge is designed for exceptional wear resistance, helping maintain thread quality and minimize tool changes in tough materials.
- Easy setup and consistent results: Laydown triangular geometry provides stable seating and predictable chip control, delivering repeatable, high-quality threads with minimal adjustment.
This insert helps streamline internal-threading work across production and maintenance tasks, delivering reliable performance, reducing downtime, and ensuring accurate results across a broad range of UN thread standards.
Part Numbers
- Protool Part Number
- 16IR11UNBLU
- 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.



