Please log in here to access all benefits, including promotional discounts and faster checkouts.
16IR40UNK20 - 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 | 40 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
Carmex Thread Turning Internal Insert - UN (UNC, UNF, UNEF, UNS) - Right Hand - 16IR40UNK20 is part of Carmex's globally recognized, industry-leading range of thread turning inserts. This premium internal threading insert is designed to work with the common UNC, UNF, UNEF, and UNS thread standards, enabling you to tackle a wide variety of internal threading tasks with a single, reusable insert. The right-hand orientation and laydown triangular geometry make it a practical choice for engineers, machinists, and technicians seeking consistent results with straightforward setup.
From basic threading jobs to more demanding applications, this insert provides broad coverage across thread standards and hole sizes, delivering clean, accurate threads with dependable performance in a range of materials.
- Broad thread-standard compatibility: Supports UNC, UNF, UNEF, and UNS internal threads, allowing many jobs to be completed with one insert and reducing tool changes.
- Laydown triangular design for stability: Triangular geometry delivers a robust cutting edge and stable operation, promoting consistent thread quality and easy control.
- Reliable performance across tasks: Designed for both basic and demanding threading work, providing predictable results and streamlined workflows with less rework.
This insert helps you streamline your threading workflow by delivering consistent thread quality, reducing setup time, and supporting efficient production on the shop floor. Its broad compatibility and proven, durable design make it a dependable choice for engineers, machinists, and maintenance teams alike.
Part Numbers
- Protool Part Number
- 16IR40UNK20
- 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.
