Please log in here to access all benefits, including promotional discounts and faster checkouts.
11IR28UNJK20 - Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 28 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
Carmex Thread Turning Internal Insert for UNJ threads is a right-hand, internal threading insert engineered to cover multiple UNJ thread forms in a single tool. It supports UNJC, UNJF, UNJEF, and UNJS, making it ideal for shops that handle diverse internal threads.
These inserts are part of our industry-leading range of thread turning solutions. The laydown triangular geometry provides stable cutting and predictable chip control, helping you achieve clean, accurate internal threads across a wide range of applications—from simple to demanding.
- Versatile UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS internal threads with a single insert, reducing tool changes and simplifying inventory.
- Stable laydown triangular design: Triangular geometry seats securely in the bore for stable cutting, smooth chip flow, and consistent thread quality.
- Reliable performance across applications: Designed to handle both basic and high-demand threading tasks with repeatable results and extended tool life.
This insert helps you complete internal threading with confidence, improving workflow, reducing rework, and delivering consistent results across materials and production runs. Built to support reliable, efficient threading from setup to finish, it’s a dependable choice for engineers, machinists, and shop floor operators alike.
Part Numbers
- Protool Part Number
- 11IR28UNJK20
- 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.
