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Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16ER20UNJBLU
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 20 |
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Description
The Carmex Thread Turning External Insert for UNJ is part of our industry-leading range of thread turning tools, designed for external threading tasks with UNJ standards. It’s built for professionals across engineering, manufacturing, and maintenance who need dependable, consistent thread formation with a right-hand cut. Part number 16ER20UNJBLU ensures compatibility with the UNJ family (UNJC, UNJF, UNJEF, UNJS).
- Broad UNJ compatibility: Supports UNJC, UNJF, UNJEF, and UNJS external threads, letting you cover multiple standards with a single tool—reducing setup time and inventory management.
- Triangular laydown geometry: The laydown triangular insert geometry delivers stable engagement with the thread profile, promoting consistent thread form, smooth finishes, and reduced chatter during cutting.
- Right-hand threading optimization: Specifically engineered for right-handed UNJ threads, enabling straightforward setup and reliable performance in everyday production workflows.
This insert is designed to simplify your threading operations, enabling faster changeovers, fewer tool alterations, and consistently accurate thread results across a range of UNJ applications. Its robust design supports demanding jobs while delivering predictable, repeatable performance you can rely on for both routine maintenance and high-throughput manufacturing.
Part Numbers
- Protool Part Number
- 16ER20UNJBLU
- 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.
