Please log in here to access all benefits, including promotional discounts and faster checkouts.
16IR24UNK20 - Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 24 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
Carmex Thread Turning Internal Insert, Model 16IR24UNK20, is a right-hand, laydown triangular insert designed for internal threading across the most common thread standards. It supports UNC, UNF, UNEF, and UNS, making it a versatile choice for machine shops, maintenance teams, and prototyping work.
These inserts are part of an industry-leading range that is recognized worldwide for reliability and performance, capable of handling a wide spectrum of applications—from basic threading tasks to the most demanding ones.
- Broad thread standard compatibility: Supports UNC, UNF, UNEF, and UNS right-hand threads, reducing tool changes and simplifying inventory.
- Stable laydown triangular design: The laydown geometry provides stable engagement and smooth cutting action, delivering consistent thread quality across parts.
- Industry-leading, globally recognized quality: Trusted by professionals worldwide for reliability and performance across a broad range of threading tasks.
By consolidating multiple thread standards into a single, proven solution, Carmex Thread Turning Internal Insert helps speed up setup, reduce tool changes, and keep production moving. Its dependable performance supports a wide range of projects—from simple repairs to more demanding tasks—delivering consistent internal threads and a smoother workflow.
Part Numbers
- Protool Part Number
- 16IR24UNK20
- 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.
