Please log in here to access all benefits, including promotional discounts and faster checkouts.
16EL16UNJK20 - 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 | 16 |
Learn more about Klarna
Compatible holders
The ones our customers buy most.
Description
Carmex Thread Turning External Insert - UNJ Left Hand (UNJC UNJF UNJEF UNJS) - 16EL16UNJK20 sits at the core of our industry‑leading thread turning range. These high‑quality laydown triangular inserts are designed to cover the majority of UNJ thread standards available today, delivering reliable performance from basic to the most demanding threading tasks.
- Extensive UNJ Coverage with Left‑Hand Capability: Works across UNJC, UNJF, UNJEF, and UNJS external threads, reducing setup time and tool changes for a wide variety of projects.
- Durable Laydown Triangular Geometry: Provides stable cutting and efficient chip control, supporting long tool life and consistent results across simple and challenging threading jobs.
- Proven Reliability Across Applications: Part of an industry‑leading range recognized worldwide for dependable performance, helping you achieve steady throughput and repeatable thread quality.
This insert is designed to help you complete thread turning with confidence, delivering clean, accurate threads and reducing rework across a broad spectrum of tasks. With broad UNJ compatibility, a stable laydown geometry, and a reputation for reliability, it supports faster setups, fewer interruptions, and dependable results on every run.
Part Numbers
- Protool Part Number
- 16EL16UNJK20
- 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.
