Please log in here to access all benefits, including promotional discounts and faster checkouts.


Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IRB18NPTBMA
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | NPT |
| Pitch | 18 |
| Insert Size | 16 |
| Grade | BMA |
Learn more about Klarna
The Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IRB18NPTBMA is part of Carmex’s 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, providing a reliable solution for a wide variety of internal threading tasks.
Designed for a broad audience—from engineers and buyers to tradespeople and hobbyists—this insert delivers dependable performance for both basic and demanding applications, in a compact, easy-to-use form.
- Broad compatibility with thread standards: Covers the majority of common thread standards in use today, reducing the need to stock multiple tools and simplifying your tooling inventory.
- Triangular laydown design for stability and precision: The laydown triangular geometry provides stable seating in the holder, smooth cutting action, and consistent thread profiles.
- Durable, reliable performance for daily use: Built to withstand routine shop-floor demands, delivering dependable results across a range of threading tasks and materials.
This insert helps streamline your threading workflow by offering one versatile solution that supports a wide range of applications, minimizes tool changes, and delivers consistent, repeatable results. It enables efficient setup, steady throughput, and confident production threading from prototype work to ongoing production runs.
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | NPT |
| Pitch | 18 |
| Insert Size | 16 |
| Grade | BMA |
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.
Full Range: Carmex Thread Turning Internal Inserts - BType - NPT - Right Hand
View full collection →You are viewing 16IRB18NPTBMA. Click any other SKU to view its full details.
| Product SKU | Thread Type | Thread Direction | Thread Form | Pitch | Insert Size | Grade | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| 11IRB18NPTBMA | Internal | Right Hand | NPT | 18 | 11 | BMA | £10.55 | 5 days | |
| 16IRB11.5NPTBMA | Internal | Right Hand | NPT | 11.5 | 16 | BMA | £9.50 | 5 days | |
| 16IRB14NPTBMA | Internal | Right Hand | NPT | 14 | 16 | BMA | £9.50 | 5 days | |
| 16IRB18NPTBMA Viewing | Internal | Right Hand | NPT | 18 | 16 | BMA | £7.29 | 5 days | |
| 16IRB8NPTBMA | Internal | Right Hand | NPT | 8 | 16 | BMA | £9.50 | 5 days |
No products match your filters.