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Carmex Thread Turning Internal Insert - Metric - Left Hand - 16IL0.35ISOK20

16IL0.35ISOK20 - Carmex Thread Turning Internal Insert - Metric - Left Hand

SKU:16IL0.35ISOK20

Carmex Thread Turning Internal Insert - Metric - Left Hand - 16IL0.35ISOK20 is a high-performance, laydown triangular insert engineered for internal thread turning on metric left‑hand threads. It... Read more ↓
N
S
Thread TypeInternal
Thread DirectionLeft Hand
Thread FormMetric
Pitch0.35
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£10.01
per item · pack of 10
Prices shown ex. VAT
5 days estimated lead time — subject to availability
Sold in packs of 10
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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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

Carmex Thread Turning Internal Insert - Metric - Left Hand - 16IL0.35ISOK20 is a high-performance, laydown triangular insert engineered for internal thread turning on metric left‑hand threads. It sits at the core of Carmex’s trusted thread turning range and is designed to cover a broad spectrum of thread standards with a single, versatile tool.

Whether you’re an engineer, a buyer, a tradesperson, or a hobbyist, this insert delivers reliable, repeatable threads across a wide range of applications—from straightforward cuts to more demanding profiling tasks.

  • Broad thread compatibility: Designed to cover the majority of metric left‑hand thread standards, reducing the need for multiple inserts and simplifying inventory management.
  • Stable, triangular laydown geometry: Precisely formed geometry ensures secure seating and smooth cutting action for consistent thread quality and reduced chatter.
  • Versatility for basic to demanding applications: One insert handles simple and challenging threading tasks with reliable performance across materials and thread profiles.

This insert helps you streamline threading work: it supports a wide range of metric left‑hand tasks with confidence, minimizes tool changes, and delivers predictable results you can rely on across your projects.

Part Numbers

Protool Part Number
16IL0.35ISOK20
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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