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11IR72UNK20 - 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 | 72 |
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The Carmex Thread Turning Internal Insert is a right-hand, internal threading insert designed to cut UNC, UNF, UNEF, and UNS threads with reliability and consistency. It’s ideal for machinists, engineers, and maintenance teams who need precise internal threads with minimal setup.
Part of our industry-leading range of thread turning inserts, these high-quality laydown triangular inserts provide a versatile solution for most thread standards used today and can handle everything from basic to demanding applications.
- Broad thread standard compatibility: Covers UNC, UNF, UNEF, and UNS, minimizing tool changes and reducing inventory so you can tackle a wide range of common threading tasks with one insert.
- Laydown triangular geometry for stable engagement: The triangular laydown design promotes even contact and smooth cutting, delivering consistent finishes and longer insert life across a variety of applications.
- Right-hand orientation for predictable results: Specifically designed for right-hand threading operations, providing reliable alignment and uniform thread quality on each job.
This insert helps you streamline your threading workflow by reducing tool changes, delivering consistent internal thread quality, and enabling faster setup and changeovers. With its broad compatibility and proven geometry, you can trust it to perform across a wide range of projects—from simple fixes to demanding production runs.
Part Numbers
- Protool Part Number
- 11IR72UNK20
- 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.



