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Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER18UN2MBMA

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER18UN2MBMA

SKU:16ER18UN2MBMA

Carmex Thread Turning External Insert is a versatile cutting insert designed for external threading on UN-standard workpieces. It’s engineered to handle UNC, UNF, UNEF, and UNS right-hand threads... Read more ↓
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Thread TypeExternal
Thread DirectionRight Hand
Thread FormUN (UNC UNF UNEF UNS)
Pitch18
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£13.68
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Carmex Thread Turning External Insert is a versatile cutting insert designed for external threading on UN-standard workpieces. It’s engineered to handle UNC, UNF, UNEF, and UNS right-hand threads, making it a practical, all-in-one solution for shops that regularly encounter multiple UN thread forms.

Built to cover a broad range of threading tasks—from quick, light-duty jobs to more demanding production work—this insert helps simplify tooling and reduce downtime by providing a single, reliable geometry capable of delivering consistent results across the most common UN thread standards.

  • Wide UN thread compatibility: Supports UNC, UNF, UNEF, and UNS right-hand threads, enabling you to tackle most UN-threaded projects with one insert.
  • Laydown triangular geometry for stable engagement: The triangular laydown design provides solid seating and predictable engagement, promoting consistent thread formation and smoother operation.
  • Right-hand thread specialization: Specifically configured for right-hand threads to deliver reliable, repeatable results in the most common machining setups.

This insert helps you improve workflow by reducing tool changes, simplifying inventory, and delivering dependable threads with each pass. Whether you’re performing precision assemblies or routine maintenance, it provides consistency, control, and efficiency across a broad range of UN-threaded applications.

Part Numbers

Protool Part Number
16ER18UN2MBMA
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.

Full Range: Carmex Thread Turning External Inserts - Multitooth - Unified - Right Hand

View full collection →

You are viewing 16ER18UN2MBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
16ER12UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1216BMA£17.80 5 days
16ER14UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1416BMA£13.68 5 days
16ER16UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1616BMA£17.80 5 days
16ER18UN2MBMA ViewingExternalRight HandUN (UNC UNF UNEF UNS)1816BMA£13.68 5 days
16ER20UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)2016BMA£13.68 5 days
22ER12UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1222BMA£21.67 5 days
22ER12UN3MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1222BMA£21.67 5 days
22ER13UN3MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1322BMA£21.67 5 days
22ER16UN3MBMA ExternalRight HandUN (UNC UNF UNEF UNS)1622BMA£21.67 5 days
27ER8UN2MBMA ExternalRight HandUN (UNC UNF UNEF UNS)827BMA£36.81 5 days

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