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Carmex Thread Turning External Insert - NPT - Left Hand - 16EL11.5NPTK20
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | NPT |
| Pitch | 11.5 |
| Insert Size | 16 |
| Grade | K20 |
Learn more about Klarna
The Carmex Thread Turning External Insert for NPT Left-Hand threads is part of our industry-leading range of thread turning inserts. These high-quality laydown triangular inserts are designed to cover the majority of thread standards in use today, delivering versatile, reliable performance across a wide range of applications.
Ideal for technicians, engineers, and operators, this insert shines on external threading tasks—from straightforward runs to the most demanding jobs—providing consistent results and easy integration into existing tooling setups.
- Broad thread-standards compatibility: The laydown triangular design is engineered to cover the majority of thread standards in common use today, so you can tackle multiple jobs with a single insert and reduce the need for tool changes.
- Triangular laydown geometry for stability: The unique triangular laydown form provides strong seating in the holder, helping to minimize vibration and deliver clean, accurate threads with consistent chip control.
- Left-hand NPT external threading optimization: Specifically optimized for left-handed external threads, ensuring precise engagement, smooth cutting action, and reliable results on every pass.
With the Carmex Thread Turning External Insert, you gain a versatile, dependable tool that simplifies your threading workflow, reduces rework, and supports consistent quality across a broad range of projects. Its broad compatibility, stable cutting geometry, and left-hand NPT optimization help you complete jobs efficiently and with repeatable results, making it a trusted choice for professionals and hobbyists alike.
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | NPT |
| Pitch | 11.5 |
| Insert Size | 16 |
| 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.
