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11IR40UNK20 - 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 |
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Carmex Thread Turning Internal Insert (UN: UNC, UNF, UNEF, UNS) with Right Hand geometry, model 11IR40UNK20, is built for internal threading tasks across a wide range of standard forms. This insert is part of Carmex’s industry-leading range, designed to deliver dependable performance in both maintenance and production environments.
These high-quality laydown triangular inserts provide a versatile solution for the majority of thread standards available today, enabling efficient tooling in mixed-machine shops. Whether you’re tackling basic threads or the most demanding applications, this insert is crafted to handle the job with consistent results.
- Wide thread-standard compatibility: Supports UNC, UNF, UNEF, and UNS internal threads with right-hand orientation, reducing the need for multiple tools and simplifying setup.
- From basic to demanding applications: Designed to perform reliably across a broad spectrum of threading tasks, materials, and cutting conditions for everyday and challenging jobs alike.
- Durable laydown triangular geometry: Built for stable cutting action and predictable edge life, helping to maintain consistent thread quality and minimize tool changes.
This insert helps you streamline workflows, shorten changeovers, and achieve dependable, repeatable thread quality across standards. With the Carmex 11IR40UNK20, you can confidence-build in your threading processes—from routine maintenance to precision production—knowing you have a versatile, reliable internal insert designed to perform.
Part Numbers
- Protool Part Number
- 11IR40UNK20
- 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.



