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

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER18UNBLU

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER18UNBLU

SKU:16ER18UNBLU

The Carmex Thread Turning External Insert is a versatile cutting insert designed for turning external threads on workpieces using UNC, UNF, UNEF, and UNS thread standards. Its right-hand geometry... Read more ↓
P
M
K
N
S
H
Thread TypeExternal
Thread DirectionRight Hand
Thread FormUN (UNC UNF UNEF UNS)
Pitch18
Insert Size16
GradeBLU
Download Cutting Data
£10.44
Prices shown ex. VAT
In Stock— only 8 left
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Klarna
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Carmex Thread Turning External Insert is a versatile cutting insert designed for turning external threads on workpieces using UNC, UNF, UNEF, and UNS thread standards. Its right-hand geometry and laydown triangular design deliver stable, repeatable threads across a wide range of materials and applications.

Designed to cover the majority of thread standards available today, this insert handles everything from basic threading tasks to the most demanding ones, making it a practical choice for shops, engineers, and craftsmen alike.

  • Broad thread-standard compatibility: One insert supports UNC, UNF, UNEF, and UNS external threads, reducing tool-change downtime and simplifying inventory for mixed threading jobs.
  • Stable laydown triangle geometry: Provides consistent cutting action and clean, accurate threads with improved chip control for reliable finishes and higher productivity.
  • Durable, reliable performance: Built to perform across simple to demanding applications with steady wear resistance and long tool life, helping minimize downtime and replacement costs.

This insert is designed to deliver dependable results across a wide range of threading tasks, helping you speed setup, improve process control, and achieve repeatable thread quality. It’s a practical, proven choice for professional shops and skilled hobbyists who value consistency and efficiency in external threading.

Thread Type External
Thread Direction Right Hand
Thread Form UN (UNC UNF UNEF UNS)
Pitch 18
Insert Size 16
Grade BLU

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy

Complete Your Project

with tools we think you'll like