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11ER20UNBMA - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| 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 – Right Hand, UN (UNC, UNF, UNEF, UNS) compatibility, model 11ER20UNBMA. This external thread turning insert is part of our globally recognized, industry-leading range and is designed to cover a wide spectrum of UN thread standards with a single tool. Its laydown triangular geometry supports both basic and demanding threading tasks, delivering reliable results across projects.
- Universal UN thread compatibility: Engineered to cover UNC, UNF, UNEF, and UNS external threads, reducing tool changes and streamlining setups for mixed-thread work.
- Laydown triangular design for stability and control: The triangular geometry provides solid seating and efficient chip evacuation, helping you achieve consistent thread quality from simple to challenging applications.
- Right-hand orientation for streamlined workflows: Optimized for right-handed machining, delivering smoother cutting action and predictable tool paths to save setup time and boost reliability.
The Carmex 11ER20UNBMA insert is built to enhance productivity by delivering dependable, repeatable threading performance. Its broad UN compatibility and robust geometry help you finish projects faster, reduce downtime, and achieve accurate, high-quality threads across a range of materials and production scales.
Part Numbers
- Protool Part Number
- 11ER20UNBMA
- 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.
