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Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 11ER28UNK20
| 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 (Right Hand, 11ER28UNK20) is designed for precise external threading across a wide range of standards, including UNC, UNF, UNEF, and UNS. It’s ideal for machinists, engineers, and shop-floor teams who need reliable, versatile tooling capable of handling both everyday and demanding thread jobs with a single insert.
Built on Carmex's industry-leading triangular laydown geometry, this insert delivers stable cutting action, efficient chip control, and a consistent surface finish. Its robust carbide edge and broad thread compatibility mean fewer tool changes and reliable performance across a wide spectrum of materials and thread forms.
- Broad thread compatibility: Cuts UNC, UNF, UNEF, and UNS external threads with a single insert, reducing tool changes and simplifying inventory.
- Triangular laydown geometry for stability: Provides smooth cutting action, improved surface finish, and effective chip control across diverse materials and threads.
- Right-hand orientation for fast setup: Specifically designed for right-hand threading operations, aligning with standard holders to help you machine accurately and efficiently with less setup time.
This insert streamlines external thread turning by offering one versatile solution that covers common thread standards, reducing downtime and inventory complexity. You gain predictable tool life, consistent thread quality, and a cleaner finish from basic production runs to high-demand applications, supporting faster setups and on-time delivery.
Part Numbers
- Protool Part Number
- 11ER28UNK20
- 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.
