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Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER20UNBLU
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 20 |
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Description
Carmex Thread Turning External Insert is a versatile cutting insert designed for external threading on UN-series threads (UNC, UNF, UNEF, UNS). With its laydown triangular geometry, it delivers stable cuts and efficient chip control across a wide range of applications—from basic tasks to the most demanding ones.
- Broad UN thread compatibility: Supports UNC, UNF, UNEF, and UNS external threads, enabling a single insert to handle many jobs and reduce tool changes.
- Triangular laydown geometry for stability: Provides a stable cutting action with improved finish and efficient chip control for reliable, repeatable results.
- Right-hand orientation for external threading: Optimized for right-hand threads and standard tooling setups, offering consistent performance across common machines.
This insert is designed to cover a wide spectrum of threading tasks, from everyday projects to more demanding production work. By standardizing on this single solution, you can streamline setups, minimize downtime, and achieve reliable, consistent thread quality across UNC, UNF, UNEF, and UNS specifications.
Part Numbers
- Protool Part Number
- 16ER20UNBLU
- 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.
