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16EL40UNJBMA - 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 | 40 |
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Compatible holders
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Description
Carmex Thread Turning External Insert for UNJ thread forms is a left-hand, external-threading insert designed to cover the UNJ family (UNJC, UNJF, UNJEF, UNJS). Its laydown triangular geometry delivers stable, repeatable cutting action for reliable thread formation across a wide range of threading tasks.
Built for versatility, this insert supports a broad audience—from engineers and buyers to tradespeople and hobbyists—by providing a single, adaptable solution that can handle both basic and more demanding threading applications with minimal setup.
- Broad UNJ Compatibility: Supports UNJC, UNJF, UNJEF, and UNJS thread forms, reducing tool changes and simplifying inventory so you can tackle most external threading tasks.
- Left-Hand, Laydown Triangular Geometry: Optimized for left-handed external turning, delivering stable seating, consistent thread profiles, and reliable performance in a variety of holders.
- Versatile for Basic to Demanding Applications: Designed to cover a wide range of threading tasks—from simple to high-demand jobs—without needing multiple inserts.
This insert helps you streamline threading workflows by combining broad compatibility with a geometry that supports stable cutting and consistent results. Whether you’re manufacturing, refurbishing, or prototyping, it offers dependable performance across UNJ standards, helping you finish parts to spec with confidence and efficiency.
Part Numbers
- Protool Part Number
- 16EL40UNJBMA
- 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.
