Please log in here to access all benefits, including promotional discounts and faster checkouts.
Carmex Thread Turning Internal Insert - NPT - Left Hand - 11IL18NPTK20
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | NPT |
| Pitch | 18 |
| Insert Size | 11 |
| Grade | K20 |
Learn more about Klarna
The Carmex Thread Turning Internal Insert is a precision cutting tool designed for internal threading on workpieces that require left-hand NPT threads. Part number 11IL18NPTK20, it belongs to Carmex’s globally recognized range of thread turning inserts and is built to handle a broad spectrum of thread standards with dependable performance.
Featuring a laydown triangular geometry, this insert delivers stable engagement and smooth chip control, making it suitable for both straightforward and demanding threading tasks across a wide range of materials.
- Wide thread standard compatibility: Designed to cover the majority of common thread standards today, reducing the need for multiple inserts and simplifying your tooling inventory.
- Laydown triangular geometry for stable cutting: Provides consistent cutting action, better chip control, and smoother finishes even under tougher threading applications.
- Left-hand NPT internal threading: Specifically tailored for internal left-hand NPT threads, delivering reliable, accurate results with a single, versatile insert.
Together, these features help streamline your machining workflow by reducing tool changes, enhancing cutting stability, and delivering repeatable thread quality across parts. The result is improved efficiency, fewer interruptions, and dependable performance in both standard and demanding threading operations.
| Thread Type | Internal |
| Thread Direction | Left Hand |
| Thread Form | NPT |
| Pitch | 18 |
| Insert Size | 11 |
| Grade | K20 |
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.
