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11ER28UNBMA - 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 | 28 |
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Description
The Carmex Thread Turning External Insert is a high-quality laydown triangular insert designed for external threading on UNC, UNF, UNEF, and UNS standards. Right-hand orientation (model 11ER28UNBMA), it’s built for engineers, machinists, and shops that require dependable threads across a variety of materials and applications.
- Broad thread-standard compatibility: One insert covers UNC, UNF, UNEF, and UNS external threads, reducing tool changes and simplifying inventory for everyday machining tasks.
- Laydown triangular geometry for stable cutting: Designed to deliver clean thread starts and consistent profiles with minimal chatter, making setup-and-cutting smoother across materials.
- Proven quality and reliable performance: Built to handle both basic and demanding applications with dependable results, backed by Carmex manufacturing standards.
This insert helps you streamline threading work by expanding compatibility with common standards, reducing tool changes, and delivering consistent thread quality across runs. Its geometry supports efficient material removal and reliable performance in a range of applications, helping you meet tight schedules and improve overall workflow.
Part Numbers
- Protool Part Number
- 11ER28UNBMA
- 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.
