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Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Left Hand - 16IL48UNK20
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 48 |
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Description
The Carmex Thread Turning Internal Insert (16IL48UNK20) is a versatile tool designed for precise internal threading in lathes and milling setups. Built around a high‑quality laydown triangular insert, it covers a broad spectrum of thread standards, delivering reliable performance from simple to demanding projects.
This left‑hand version is compatible with UNC, UNF, UNEF, and UNS internal threads, making it a single, ready‑to‑use solution for a wide range of applications. Ideal for shops that value efficiency, it reduces tool changes while maintaining strong, consistent results across different materials and threading tasks.
- Broad thread standard compatibility: Supports UNC, UNF, UNEF, and UNS internal threads, enabling one insert to handle most common threading needs and reducing the need for multiple tools.
- Left‑hand threading support: Specifically designed to efficiently machine left‑hand internal threads, helping you achieve accurate starts and clean finishes with fewer reworks.
- Triangular laydown geometry for stability: The laydown triangular insert geometry provides stable cutting, smooth chip control, and consistent thread quality across varied applications.
Designed for reliability and ease of use, this insert helps improve workflow by simplifying setups, expanding compatibility, and delivering dependable thread quality from basic tasks to demanding production jobs.
Part Numbers
- Protool Part Number
- 16IL48UNK20
- 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.
