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16ER12UNBLU - Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand
| Thread Type | External |
| Thread Direction | Right Hand |
| Thread Form | UN (UNC UNF UNEF UNS) |
| Pitch | 12 |
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Description
Carmex Thread Turning External Insert is a precision cutting tool designed for external threading on UN standards (UNC, UNF, UNEF, UNS). Its laydown triangular geometry provides a stable, efficient cutting action, delivering accurate thread forms across a wide range of sizes and applications.
Perfect for engineers, machinists, and maintenance teams, this insert offers dependable performance from basic to demanding threading jobs—helping you achieve consistent results, reduce scrap, and minimize downtime in busy shops.
- Broad UN-thread compatibility: Designed to handle UNC, UNF, UNEF, and UNS external threads, allowing one insert to cover multiple standards and reducing tool changes.
- Triangular laydown geometry for stability: The laydown design provides strong cutting engagement, minimizing chatter and delivering a smooth, reliable thread finish across materials and conditions.
- Durable, precision-ground construction: Carefully ground edges and a robust geometry maintain sharpness for repeatable thread quality and longer insert life in production environments.
This external thread turning insert helps streamline threading operations by delivering consistent results, reducing cycle times, and enabling tooling standardization across UN-thread projects. Reliable performance across basic to demanding threads means fewer tool changes and more productive workdays.
Part Numbers
- Protool Part Number
- 16ER12UNBLU
- 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.
