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Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16ER48UNJK20
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 48 |
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Carmex Thread Turning External Insert for UNJ threads (UNJC, UNJF, UNJEF, UNJS) in a Right Hand configuration is a versatile turning solution designed for external threading tasks. Perfect for shops, job sites, and production lines, it covers a broad range of UNJ thread standards with a single insert, helping you streamline tooling and reduce setup time.
This insert features a laydown triangular geometry that promotes smooth cutting and stable engagement. Its design supports clean thread profiles and reliable performance across basic to demanding applications, delivering consistent results even as part sizes and materials vary.
- Broad UNJ Compatibility: Covers UNJC, UNJF, UNJEF, and UNJS with one tool, reducing tool changes and simplifying inventory so you can handle a wide mix of thread jobs without swapping inserts.
- Laydown Triangular Geometry for Smooth Cutting: Optimizes chip control and reduces rubbing, yielding cleaner threads and longer tool life with less rework.
- Built for Reliability in Right-Hand External Threading: Specifically engineered for right-hand external threads, providing stable performance, easy indexing, and quick changovers to keep your production running smoothly.
Designed to help you finish threads quickly and consistently, this insert supports efficient workflows, minimizes downtime, and delivers repeatable results across a diversified range of UNJ applications. It’s a dependable choice for engineers, machinists, and production teams aiming for steady throughput and high-quality thread finishes.
Part Numbers
- Protool Part Number
- 16ER48UNJK20
- 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.



