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11EL16UNJBMA - Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Left Hand
| Thread Type | External |
| Thread Direction | Left Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 16 |
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Description
The Carmex Thread Turning External Insert is a versatile cutting tool designed for external threading on UNJ standards. It’s ideal for engineers, machinists, and technicians who need reliable, repeatable thread profiles across UNJ applications.
Cataloged as model 11EL16UNJBMA, this left-hand insert uses a laydown triangular geometry to deliver stable cutting action, clean chip control, and consistent results from basic jobs to demanding production runs.
- Broad UNJ compatibility: Works with UNJC, UNJF, UNJEF, and UNJS external thread standards, consolidating tooling and reducing the need for multiple inserts.
- Left-hand external threading design: Optimized for left-handed threads, providing predictable performance and smooth engagement for reliable results.
- Laydown triangular geometry for consistent cutting: Delivers stable chip flow and reduced vibration, enabling clean, accurate threads across a wide range of applications.
This insert helps streamline your workflow by minimizing tool changes and delivering repeatable thread quality across parts and batches. Its broad UNJ coverage and left-hand threading capability save setup time, improve uptime, and support consistent results that meet tight tolerances and finish requirements.
Part Numbers
- Protool Part Number
- 11EL16UNJBMA
- 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.
