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Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16IRB12UNBMA

Carmex Thread Turning Internal Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16IRB12UNBMA

SKU:16IRB12UNBMA

The Carmex Thread Turning Internal Insert (model 16IRB12UNBMA) is a versatile cutting insert designed for internal threading tasks. It supports UN thread forms (UNC, UNF, UNEF, UNS) with a right‑... Read more ↓
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Thread TypeInternal
Thread DirectionRight Hand
Thread FormUN (UNC UNF UNEF UNS)
Pitch12
Insert Size16
GradeBMA
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£9.50
Prices shown ex. VAT
5 days estimated lead time — subject to availability
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The Carmex Thread Turning Internal Insert (model 16IRB12UNBMA) is a versatile cutting insert designed for internal threading tasks. It supports UN thread forms (UNC, UNF, UNEF, UNS) with a right‑hand orientation, making it a practical choice for engineers, buyers, tradespeople, hobbyists, and others who need reliable, repeatable internal threads.

As part of our industry‑leading range, these laydown triangular inserts are recognized worldwide for covering the majority of thread standards today. They are suitable for applications ranging from basic to the most demanding tasks.

  • Wide UN thread compatibility: Handles UNC, UNF, UNEF, and UNS forms, allowing you to complete most internal threads with a single insert and reducing the need for multiple tools.
  • Stable, efficient cutting geometry: The laydown triangular design delivers solid engagement and clean thread profiles, helping to minimize chatter and improve finish consistency.
  • Broad application range: Built to perform across a wide spectrum of tasks—from simple to challenging—delivering reliable results and reducing tool changes in production environments.

This internal insert supports a smooth transition into existing tooling setups thanks to its right‑hand orientation, providing dependable performance, longer tool life, and confidence in producing accurate, repeatable threads across common UN standards.

Thread Type Internal
Thread Direction Right Hand
Thread Form UN (UNC UNF UNEF UNS)
Pitch 12
Insert Size 16
Grade BMA

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.

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Full Range: Carmex Thread Turning Internal Inserts - BType - Unified - Right Hand

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You are viewing 16IRB12UNBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
11IRB12UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1211BMA£8.10 5 days
11IRB14UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1411BMA£8.10 5 days
11IRB16UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1611BMA£10.55 5 days
11IRB18UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1811BMA£8.10 5 days
11IRB20UNBMA InternalRight HandUN (UNC UNF UNEF UNS)2011BMA£10.55 In Stock
11IRB24UNBMA InternalRight HandUN (UNC UNF UNEF UNS)2411BMA£10.55 5 days
11IRB28UNBMA InternalRight HandUN (UNC UNF UNEF UNS)2811BMA£8.10 5 days
11IRB32UNBMA InternalRight HandUN (UNC UNF UNEF UNS)3211BMA£8.10 5 days
16IRB10UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1016BMA£9.50 5 days
16IRB12UNBMA ViewingInternalRight HandUN (UNC UNF UNEF UNS)1216BMA£9.50 5 days
16IRB14UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1416BMA£9.50 5 days
16IRB16UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1616BMA£9.50 5 days
16IRB18UNBMA InternalRight HandUN (UNC UNF UNEF UNS)1816BMA£9.50 5 days
16IRB20UNBMA InternalRight HandUN (UNC UNF UNEF UNS)2016BMA£9.50 5 days
16IRB24UNBMA InternalRight HandUN (UNC UNF UNEF UNS)2416BMA£9.50 5 days
16IRB8UNBMA InternalRight HandUN (UNC UNF UNEF UNS)816BMA£9.50 5 days

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