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


Carmex Thread Turning External Insert - NPT - Left Hand - 16EL27NPTBMA
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | NPT |
| Pitch | 27 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
Carmex Thread Turning External Insert for NPT Left-Hand threads is part of our industry-leading range of thread turning inserts. These premium laydown triangular inserts are designed to cover a broad spectrum of thread standards available today, delivering dependable performance from basic tasks to the most demanding applications.
- Broad thread-standards compatibility: Designed to cover the majority of thread standards in use today, helping you reduce tool changes and simplify your tooling inventory for external threading tasks.
- Premium laydown triangular geometry: Provides robust cutting engagement and stable performance across a variety of thread profiles, supporting reliable results with minimal rework.
- Optimized for NPT Left-Hand external threads: Specifically engineered for left-hand NPT threading, enabling precise, efficient operations and clean, consistent threads.
In practice, this insert helps you streamline operations by handling a wide range of threading tasks with a single, adaptable solution. It supports quicker setups, fewer tool changes, and more predictable results across standard and challenging jobs, helping you stay on schedule and maintain quality across the board.
Part Numbers
- Protool Part Number
- 16EL27NPTBMA
- 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.



