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Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16IR24UNJK20
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 24 |
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Carmex Thread Turning Internal Insert is a high‑quality, ready‑to‑use solution for internal threading tasks. Part of our globally trusted range, this laydown triangular insert is designed to cover a broad spectrum of thread standards with dependable results.
The model 16IR24UNJK20 is a right‑hand insert compatible with the UNJ family (including UNJC, UNJF, UNJEF, and UNJS). It equips your shop to handle a wide range of applications—from simple threading jobs to more demanding requirements—without changing tools.
- Wide UNJ compatibility: Works with UNJ and related standards (UNJC, UNJF, UNJEF, UNJS) in a single insert, reducing tool changes and stocking needs.
- Durable triangular laydown geometry: Provides stable cutting action and efficient chip control, helping the insert last longer across a variety of threading tasks.
- Consistent threading with easy setup: Delivers reliable internal threads with minimal setup effort, helping you complete parts faster and with fewer reworks.
With this insert, you gain a dependable, versatile tool that reduces setup time, lowers inventory complexity, and consistently delivers accurate internal threads. Its robust design supports steady production in a range of materials and applications, helping your team improve throughput and part quality.
Part Numbers
- Protool Part Number
- 16IR24UNJK20
- 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.



