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11EL14UNJBMA - 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 | 14 |
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Our Carmex Thread Turning External Insert is designed for external turning of UNJ threads with a left-hand lead. This insert covers UNJ standards including UNJC, UNJF, UNJEF, and UNJS, letting you tackle multiple thread types with a single tool. The laydown triangular geometry delivers reliable cutting performance across a wide range of applications—from basic to demanding tasks.
As part of Carmex's industry-leading range of thread turning inserts, this tool is built to provide consistent results and durable performance in everyday shop conditions.
- Broad UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS, so you can handle multiple thread standards with one insert.
- Left-hand threading optimized: Engineered for left-handed threads, promoting easier starts and consistent thread formation.
- Durable laydown triangular design: Sturdy geometry provides a reliable cutting edge and stable performance across a range of applications.
This insert helps streamline threading operations by supporting multiple UNJ standards with one tool, reducing tool changes and inventory complexity. Its robust design and optimized geometry contribute to smoother finishes, improved surface quality, and reliable performance across both simple and demanding tasks—empowering you to complete projects faster with consistent results.
Part Numbers
- Protool Part Number
- 11EL14UNJBMA
- 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.










