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16IL20UNBLU - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 20 |
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Description
The Carmex Thread Turning Internal Insert is a precision tool designed for internal threading tasks. With its universal geometry, it supports UNC, UNF, UNEF, and UNS thread standards, making it a versatile choice for left-hand thread operations. The laydown triangular insert profile delivers stable cutting action and consistent thread forms across a variety of materials and applications.
Ideal for job shops, maintenance technicians, and engineers who need reliable results without swapping between multiple inserts. The left-hand orientation combined with the universal thread compatibility reduces tool changes and simplifies inventory while delivering predictable, repeatable threads—from basic to demanding applications.
- Broad thread compatibility: One insert supports UNC, UNF, UNEF, and UNS internal threads, reducing tool changes and stocking complexity.
- Left-hand threading optimized: Specifically designed for left-hand thread operations, delivering steady cutting action and consistent thread profiles for clean results.
- Laydown triangular geometry for stability: The triangular laydown design provides rigidity and stable engagement, enabling reliable performance across basic to demanding tasks.
This insert is a dependable, adaptable solution for internal threading that helps you complete assemblies faster, maintain consistent thread quality, and simplify your tooling. Whether you’re tackling routine maintenance or precision production, it supports smooth workflows and dependable results across a wide range of thread standards.
Part Numbers
- Protool Part Number
- 16IL20UNBLU
- 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.
