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

Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16ER44UNJK20

Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Right Hand - 16ER44UNJK20

SKU:16ER44UNJK20

Carmex Thread Turning External Insert 16ER44UNJK20 is a high-performance cutting tool designed for external thread turning across a broad range of materials. Its laydown triangular geometry deliv... Read more ↓
N
S
Thread TypeExternal
Thread DirectionRight Hand
Thread FormUNJ (UNJC UNJF UNJEF UNJS)
Pitch44
Insert Size16
GradeK20
Download Cutting Data
£12.83
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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

Carmex Thread Turning External Insert 16ER44UNJK20 is a high-performance cutting tool designed for external thread turning across a broad range of materials. Its laydown triangular geometry delivers stable, precise thread profiles and smooth finishes, even in tougher materials. This right-hand insert supports the UNJ thread family (UNJC, UNJF, UNJEF, UNJS) and is ready for both straightforward and demanding production tasks.

  • Broad UNJ compatibility: Covers UNJC, UNJF, UNJEF, and UNJS profiles, enabling you to tackle most external thread turning challenges with a single insert and reducing tool changes and inventory.
  • Triangular laydown geometry for stability: Provides a stable cutting action that minimizes rubbing and heat, delivering consistent thread forms and smooth surface finishes for reliable results.
  • Right-hand orientation with durable carbide: Optimized for right-hand threading and built from wear‑resistant carbide to maintain sharpness and performance under heavy feeds and demanding materials.

Using this insert helps streamline production by delivering repeatable thread quality, extending tool life, and reducing downtime. The broad UNJ compatibility simplifies stocking and setup, while the robust geometry and carbide construction support dependable performance across a wide range of materials and applications. In short, it helps you finish projects faster with confidence and consistently good results.

Thread Type External
Thread Direction Right Hand
Thread Form UNJ (UNJC UNJF UNJEF UNJS)
Pitch 44
Insert Size 16
Grade K20

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