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16EL18UNJK20 - 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 | 18 |
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Description
Carmex Thread Turning External Insert for UNJ threads is a precision cutting tool designed for external threading on UNJ workpieces. It supports UNJC, UNJF, UNJEF, and UNJS standards and is available in a left-hand version to match your machining needs. Part code 16EL18UNJK20.
As part of Carmex’s industry-leading range, these laydown triangular inserts are built for reliability across a broad spectrum of applications—from quick, basic threads to the most demanding runs. The geometry promotes stable cutting, smooth chip flow, and long tool life.
- Broad UNJ compatibility: One insert covers UNJC, UNJF, UNJEF, and UNJS external threads, reducing tool changes and simplifying inventory for a wide range of jobs.
- Left-hand threading readiness: Specifically engineered for left-hand threads, providing consistent cutting action and reliable results on your LH projects.
- Laydown triangular geometry for stability: The triangular, laydown shape promotes efficient chip control, reduces chatter, and delivers even wear for longer insert life.
With Carmex, you gain a proven threading solution that speeds setup, minimizes downtime, and helps you achieve precise thread profiles across materials. It’s a dependable choice for engineers, machinists, and buyers who demand consistent performance and easy, predictable results on every job.
Part Numbers
- Protool Part Number
- 16EL18UNJK20
- 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.
