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Carmex Thread Turning Internal Insert - NPT - Left Hand - 16IL11.5NPTBMA

Carmex Thread Turning Internal Insert - NPT - Left Hand - 16IL11.5NPTBMA

SKU:16IL11.5NPTBMA

The Carmex Thread Turning Internal Insert for NPT Left Hand (16IL11.5NPTBMA) is a high-precision internal threading insert designed for turning NPT left-hand threads. It sits at the core of Carme... Read more ↓
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Thread TypeInternal
Thread DirectionLeft Hand
Thread FormNPT
Pitch11.5
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£7.29
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
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Thread Turning Internal Insert for NPT Left Hand (16IL11.5NPTBMA) is a high-precision internal threading insert designed for turning NPT left-hand threads. It sits at the core of Carmex’s industry-leading range of thread turning inserts, offering broad compatibility with a wide range of thread standards.

Ideal for engineers, machinists, and maintenance teams, this insert enables efficient, reliable internal threading from basic to demanding applications, helping you complete jobs with confidence and fewer tool changes.

  • Broad thread standard compatibility: Designed to cover the majority of thread standards, so you can tackle diverse internal threading tasks with a single insert and reduce stocking needs.
  • Triangular laydown geometry for stable cuts: The laydown triangular design delivers consistent cutting action, smoother finishes, and improved reliability across a wide range of applications.
  • NPT Left-Hand internal threading focus: Specifically engineered for turning internal left-hand NPT threads, ensuring precise thread form and dependable engagement in pipe-fitting work.

By choosing this insert, you gain versatile performance, faster setup for multiple jobs, and dependable results that help streamline workflows, reduce downtime, and improve overall productivity in production or maintenance environments.

Part Numbers

Protool Part Number
16IL11.5NPTBMA
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 Internal Inserts - NPT - Right/Left Hand

View full collection →

You are viewing 16IL11.5NPTBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
06IL27NPTBMA InternalLeft HandNPT276BMA£8.90 5 days
06IL27NPTBXC InternalLeft HandNPT276BXC£13.88 5 days
06IR27NPTBMA InternalRight HandNPT276BMA£11.60 In Stock
08IL18NPTBMA InternalLeft HandNPT188BMA£8.90 5 days
08IL27NPTBMA InternalLeft HandNPT278BMA£8.90 5 days
08IR18NPTBMA InternalRight HandNPT188BMA£11.60 In Stock
08IR27NPTBMA InternalRight HandNPT278BMA£11.60 In Stock
11IL14NPTBMA InternalLeft HandNPT1411BMA£8.10 5 days
11IL18NPTBMA InternalLeft HandNPT1811BMA£8.10 5 days
11IL27NPTBMA InternalLeft HandNPT2711BMA£8.10 5 days
11IR14NPTBMA InternalRight HandNPT1411BMA£10.55 In Stock
11IR18NPTBMA InternalRight HandNPT1811BMA£10.55 In Stock
11IR27NPTBMA InternalRight HandNPT2711BMA£10.55 In Stock
16IL11.5NPTBMA ViewingInternalLeft HandNPT11.516BMA£7.29 5 days
16IL14NPTBMA InternalLeft HandNPT1416BMA£7.29 5 days
16IL18NPTBMA InternalLeft HandNPT1816BMA£7.29 5 days
16IL27NPTBMA InternalLeft HandNPT2716BMA£7.29 5 days
16IL8NPTBMA InternalLeft HandNPT816BMA£9.50 5 days
16IR11.5NPTBMA InternalRight HandNPT11.516BMA£9.50 5 days
16IR14NPTBMA InternalRight HandNPT1416BMA£9.50 In Stock
16IR18NPTBMA InternalRight HandNPT1816BMA£9.50 In Stock
16IR27NPTBMA InternalRight HandNPT2716BMA£9.50 In Stock
16IR8NPTBMA InternalRight HandNPT816BMA£9.50 5 days

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