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Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IR11.5NPTK20

Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IR11.5NPTK20

SKU:16IR11.5NPTK20

Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IR11.5NPTK20 is a compact, replaceable cutting insert designed for internal threading. Part of Carmex’s industry-leading thread turnin... Read more ↓
N
S
Thread TypeInternal
Thread DirectionRight Hand
Thread FormNPT
Pitch11.5
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£7.74
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Carmex Thread Turning Internal Insert - NPT - Right Hand - 16IR11.5NPTK20 is a compact, replaceable cutting insert designed for internal threading. Part of Carmex’s industry-leading thread turning range, these laydown triangular inserts are built to handle the broad spectrum of thread standards used today. They’re ideal for technicians and shops that need reliable internal threads without juggling multiple tools.

Whether you’re performing routine maintenance, one-off projects, or higher-volume production, this insert delivers consistent results with minimal setup. Its geometry and construction support robust performance across simple to demanding threading tasks, so you can trust it to produce clean, accurate threads with predictable outcomes.

  • Broad thread-standards compatibility: Covers the majority of thread standards in use today, including internal NPT right-hand threads, reducing frequent tool changes and simplifying inventory.
  • Laydown triangular geometry for stability and finish: Provides solid engagement, efficient chip control, and consistent thread profiles across a range of materials.
  • Reliable performance from basic to demanding tasks: Delivers dependable results with minimal variance, supporting steady throughput and fewer reworks.

This insert helps you streamline setup, reduce downtime, and achieve consistent, high-quality internal threads across a variety of applications. Rely on its proven design to improve workflow, protect part quality, and keep production schedules on track.

Part Numbers

Protool Part Number
16IR11.5NPTK20
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

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