Please log in here to access all benefits, including multibuy discounts and faster checkouts.

Carmex Carbide Threading Insert - UNJ - TiAlN Coated - 14E16UNJ
| Application | Threading |
| Thread Form | UNJ |
| Internal or External | External |
| Insert Size | 14 |
| Pitch | 16 |
Learn more about Klarna
The Carmex Carbide Threading Insert for UNJ threads is a durable, TiAlN-coated solution built for machinists who regularly cut UN and UNJ thread profiles. Designed to deliver reliable performance across a wide range of pitches and thread types, it’s a practical choice for precise threading in metalworking environments.
- Five length options (12–40 mm): a versatile family of inserts that spans typical thread profiles, enabling broad coverage without swapping tooling.
- Wide pitch range: handles pitches from 0.5 mm / 32 TPI up to 6.0 mm / 4 TPI, with compatibility depending on the chosen length.
- TiAlN-coated carbide: enhanced wear resistance and heat tolerance for longer insert life and steadier cutting performance in demanding operations.
- Double-edged design: each insert provides two cutting edges for extended use, reducing tool changes (exceptions apply for BSPT/NPT/NPTF/American Buttress/API RD).
- Internal/External threading versatility: for many thread profiles, the same insert can machine both internal and external threads; note that some profiles (ISO / UN / NPSM / UNJ / Acme) have specialized requirements.
Designed to simplify threading workflows, this insert offers consistent chip control and clean thread finishes across a variety of applications—from plumbing fittings to precision fasteners. Its robust construction and edge geometry help maintain accuracy over multiple passes, making it a reliable choice for medium- to high-demand threading tasks in workshops and production environments.
| Application | Threading |
| Thread Form | UNJ |
| Internal or External | External |
| Insert Size | 14 |
| Pitch | 16 |
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.
Full Range: Carmex Carbide Threading Inserts - UNJ - TiAlN Coated
View full collection →You are viewing 14E16UNJ. Click any other SKU to view its full details.
| Product SKU | Insert Size | Pitch | Price | Stock | Order |
|---|---|---|---|---|---|
| 14I24UNJ | 14 | 24 | £32.37 | 5 days | |
| 14E24UNJ | 14 | 24 | £32.37 | 5 days | |
| 14I20UNJ | 14 | 20 | £32.37 | 5 days | |
| 14E20UNJ | 14 | 20 | £32.37 | 5 days | |
| 14I18UNJ | 14 | 18 | £26.50 | In Stock | |
| 14E18UNJ | 14 | 18 | £32.37 | 5 days | |
| 14I16UNJ | 14 | 16 | £32.37 | 5 days | |
| 14E16UNJ Viewing | 14 | 16 | £32.37 | 5 days | |
| 14I14UNJ | 14 | 14 | £32.37 | 5 days | |
| 14E14UNJ | 14 | 14 | £32.37 | 5 days | |
| 14I12UNJ | 14 | 12 | £32.37 | 5 days | |
| 14E12UNJ | 14 | 12 | £32.37 | 5 days | |
| 21I24UNJ | 21 | 24 | £43.03 | 5 days | |
| 21E24UNJ | 21 | 24 | £43.03 | 5 days | |
| 21I20UNJ | 21 | 20 | £43.03 | 5 days | |
| 21E20UNJ | 21 | 20 | £43.03 | 5 days | |
| 21I18UNJ | 21 | 18 | £43.03 | 5 days | |
| 21E18UNJ | 21 | 18 | £43.03 | 5 days | |
| 21I16UNJ | 21 | 16 | £43.03 | 5 days | |
| 21E16UNJ | 21 | 16 | £43.03 | 5 days | |
| 21I14UNJ | 21 | 14 | £43.03 | 5 days | |
| 21E14UNJ | 21 | 14 | £43.03 | 5 days | |
| 21I12UNJ | 21 | 12 | £35.22 | In Stock | |
| 21E12UNJ | 21 | 12 | £43.03 | 5 days |
No products match your filters.


