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Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16IR16UNJK20
| Thread Type | Internal |
| Thread Direction | Right Hand |
| Thread Form | UNJ (UNJC UNJF UNJEF UNJS) |
| Pitch | 16 |
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Description
The Carmex Thread Turning Internal Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16IR16UNJK20 is a precision internal threading insert built for turning operations across a wide range of UNJ thread standards. It’s designed for engineers, machinists, and production teams looking for clean, accurate internal threads with minimal setup and reliable performance.
Part of Carmex's trusted thread turning lineup, this right-hand insert supports UNJC, UNJF, UNJEF, and UNJS forms, enabling you to standardize tooling and complete more jobs with a single, capable tool. Whether you’re performing routine production work or tackling demanding threading tasks, this insert is designed to deliver repeatable results.
- Broad UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS internal thread forms, reducing tool changes and expanding what you can manufacture with one insert.
- Laydown triangular geometry: Multi-edge cutting geometry provides stable, predictable cutting action and helps produce consistent thread finishes with smooth chip control.
- Right-hand orientation for reliable results: Optimized for right-hand threads and common turning setups, delivering repeatable, clean thread starts across a wide range of materials.
By using this Carmex insert, you streamline threading tasks, shorten setup times, and achieve dependable thread quality on every part. It supports faster production cycles, reduces downtime, and helps you meet tighter tolerances with confidence, whether in a repair shop or high-volume manufacturing environment.
Part Numbers
- Protool Part Number
- 16IR16UNJK20
- 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.
