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


Carmex Thread Turning External Insert - NPTF - Left Hand - 11EL27NPTFBMA
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | NPTF |
| Pitch | 27 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.Description
The Carmex Thread Turning External Insert for NPTF, Left Hand is a precision cutting insert designed for turning external threads on left‑hand NPTF workpieces. Built to perform across a broad range of thread standards, this insert helps shops, engineers, and hobbyists achieve consistent thread profiles with minimal setup.
- Wide thread-standard compatibility: Designed to cover the majority of commonly used thread standards, reducing the need to stock multiple inserts and simplifying your tooling inventory.
- Triangular laydown geometry for stable cutting: The laydown triangular shape delivers solid seating and efficient chip control, promoting smooth, reliable thread formation on NPTF left‑hand threads.
- Versatile performance from basic to demanding tasks: Ready to handle simple threading jobs and the most demanding applications, delivering repeatable cuts and dependable results across a range of projects.
This insert supports efficient, repeatable threading workflows, helps minimize rework, and enhances overall productivity. It’s a dependable choice for professionals who require accurate, consistent external threading without frequent tool changes.
Part Numbers
- Protool Part Number
- 11EL27NPTFBMA
- 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.



