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16EL14UNJBMA - Carmex Thread Turning External Insert - UNJ (UNJC UNJF UNJEF UNJS) - Left Hand

SKU:16EL14UNJBMA

Carmex Thread Turning External Insert is a premium, laydown triangular insert engineered for external threading on UNJ-style screws and components. Specifically designed for left-hand operations,... Read more ↓
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M
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Thread TypeExternal
Thread DirectionLeft Hand
Thread FormUNJ (UNJC UNJF UNJEF UNJS)
Pitch14
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£12.06
per item · pack of 5
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Sold in packs of 5
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.
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Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Carmex Thread Turning External Insert is a premium, laydown triangular insert engineered for external threading on UNJ-style screws and components. Specifically designed for left-hand operations, it supports UNJC, UNJF, UNJEF, and UNJS standards, giving you a versatile tool that covers a broad range of threading tasks in one insert. Whether you’re finishing fasteners, fittings, or custom parts, this insert helps you achieve clean, accurate threads with consistent results.

  • Broad UNJ compatibility: covers UNJC, UNJF, UNJEF, UNJS, and left-hand threading, enabling a single insert to handle most external thread turning tasks and reducing tool changes.
  • Triangular laydown geometry for consistent threading: the high-quality laydown triangular design delivers stable cutting action, helping produce clean thread profiles with reliable performance across materials.
  • Easy, ready-to-use performance across basic to demanding applications: designed to handle everything from simple thread cuts to the most challenging jobs, with dependable results and minimized downtime.

This insert streamlines your threading workflow by consolidating tooling for multiple UNJ standards, supporting efficient setups and repeatable results. Built for durability and consistent wear resistance, it helps you complete external thread turning tasks more quickly, with less rework and fewer interruptions—so you can focus on producing precise, high-quality parts on every job.

Part Numbers

Protool Part Number
16EL14UNJBMA
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Complete Your Project

Tooling and consumables that work with this product.
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