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16IR11.5UNBLU - 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 | 11.5 |
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The Carmex Thread Turning Internal Insert – Right Hand – UN (UNC, UNF, UNEF, UNS) compatibility (16IR11.5UNBLU) is a versatile tool designed for precise internal threading on lathes and turning centers. This insert is part of our industry-leading range of thread turning inserts and uses a laydown triangular geometry that covers the majority of common thread standards in one reliable solution.
- Universal UN-thread compatibility: Works across UNC, UNF, UNEF, and UNS internal thread standards, simplifying inventory and enabling consistent threading performance across a wide range of sizes.
- Triangular laydown geometry for stability: Provides rigid engagement, excellent chip control, and a clean thread finish even in tight pockets or demanding materials.
- Right-hand threading design: Optimized for right-hand internal threads, delivering smooth cutting action and dependable results in typical turning setups.
Designed to handle applications from basic to the most demanding, this insert helps tighten tolerances, improve finish quality, and reduce tool changes. It supports efficient workflows by delivering consistent threading results, enabling you to complete parts faster with fewer inserts and rework.
Part Numbers
- Protool Part Number
- 16IR11.5UNBLU
- 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.



