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22ER4.0ISOBMA - Carmex Thread Turning External Insert - Metric - Right Hand

SKU:22ER4.0ISOBMA

The Carmex Thread Turning External Insert is a metric, right-hand cutting insert designed for external thread turning. Built around a robust laydown triangular geometry, it delivers consistent thr... Read more ↓
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M
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Thread TypeExternal
Thread DirectionRight Hand
Thread FormMetric
Pitch4
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£13.93
per item · pack of 2
Prices shown ex. VAT
In Stock— only 4 left
Sold in packs of 2
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Free delivery over £50 ex VAT
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14-day returns
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Carmex Thread Turning External Insert is a metric, right-hand cutting insert designed for external thread turning. Built around a robust laydown triangular geometry, it delivers consistent thread forms across a wide range of metric standards. It’s a reliable choice for machinists, fabricators, and hobbyists who work with external threads and demand steady results with fewer tool changes.

This insert is crafted to cover the majority of ISO metric thread standards used today, from straightforward jobs to more demanding applications. With proven performance in both light-duty and heavy-duty threading, it helps keep production running smoothly and parts meeting spec.

  • Broad metric thread compatibility: Designed to cover the majority of ISO metric thread standards used in external turning, reducing the need for multiple inserts and simplifying setup.
  • Laydown triangular geometry for stability: The triangular, laydown design provides strong engagement, efficient chip control, and consistent thread quality across passes.
  • Right-hand orientation for reliable results: Optimized for right-hand external threads, delivering predictable cutting action and smooth finish on metric workpieces.

With this insert, you gain a versatile tool that simplifies inventory, speeds up setup, and delivers repeatable thread profiles. Its durable construction resists wear in demanding threading tasks, helping you achieve accurate threads with fewer passes and less downtime. Its predictable performance supports higher productivity and better part consistency across jobs.

Part Numbers

Protool Part Number
22ER4.0ISOBMA
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 - ISO - Right/Left Hand

View full collection →

You are viewing 22ER4.0ISOBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
16EL0.35ISOBMA ExternalLeft HandMetric0.3516BMA£9.47 per item · pack of 55 days
Sold in packs of 5
16EL0.45ISOBMA ExternalLeft HandMetric0.4516BMA£9.47 per item · pack of 55 days
Sold in packs of 5
16EL0.4ISOBMA ExternalLeft HandMetric0.416BMA£9.47 per item · pack of 55 days
Sold in packs of 5
16EL0.5ISOBMA ExternalLeft HandMetric0.516BMA£12.31 per item · pack of 55 days
Sold in packs of 5
16EL0.6ISOBMA ExternalLeft HandMetric0.616BMA£9.47 per item · pack of 55 days
Sold in packs of 5
16EL0.75ISOBMA ExternalLeft HandMetric0.7516BMA£12.31 per item · pack of 55 days
Sold in packs of 5
16EL0.7ISOBMA ExternalLeft HandMetric0.716BMA£12.31 per item · pack of 55 days
Sold in packs of 5
16EL0.8ISOBMA ExternalLeft HandMetric0.816BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL1.0ISOBMA ExternalLeft HandMetric116BMA£9.50 per item · pack of 5In Stock
Sold in packs of 5
16EL1.25ISOBMA ExternalLeft HandMetric1.2516BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL1.5ISOBMA ExternalLeft HandMetric1.516BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL1.75ISOBMA ExternalLeft HandMetric1.7516BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL2.0ISOBMA ExternalLeft HandMetric216BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL2.5ISOBMA ExternalLeft HandMetric2.516BMA£9.50 per item · pack of 5In Stock
Sold in packs of 5
16EL3.0ISOBMA ExternalLeft HandMetric316BMA£9.50 per item · pack of 55 days
Sold in packs of 5
16EL3.5ISOBMA ExternalLeft HandMetric3.516BMA£9.50 per item · pack of 5In Stock
Sold in packs of 5
16ER0.25ISOBMA ExternalRight HandMetric0.2516BMA£12.33 per item · pack of 2In Stock
Sold in packs of 2
16ER0.35ISOBMA ExternalRight HandMetric0.3516BMA£12.31 per item · pack of 25 days
Sold in packs of 2
16ER0.45ISOBMA ExternalRight HandMetric0.4516BMA£12.31 per item · pack of 25 days
Sold in packs of 2
16ER0.4ISOBMA ExternalRight HandMetric0.416BMA£12.31 per item · pack of 2In Stock
Sold in packs of 2
16ER0.5ISOBMA ExternalRight HandMetric0.516BMA£12.31 per item · pack of 2In Stock
Sold in packs of 2
16ER0.6ISOBMA ExternalRight HandMetric0.616BMA£12.31 per item · pack of 25 days
Sold in packs of 2
16ER0.75ISOBMA ExternalRight HandMetric0.7516BMA£12.31 per item · pack of 25 days
Sold in packs of 2
16ER0.7ISOBMA ExternalRight HandMetric0.716BMA£12.31 per item · pack of 2In Stock
Sold in packs of 2
16ER0.8ISOBMA ExternalRight HandMetric0.816BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER1.0ISOBMA ExternalRight HandMetric116BMA£9.50 per item · pack of 25 days
Sold in packs of 2
16ER1.25ISOBMA ExternalRight HandMetric1.2516BMA£9.50 per item · pack of 25 days
Sold in packs of 2
16ER1.5ISOBMA ExternalRight HandMetric1.516BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER1.75ISOBMA ExternalRight HandMetric1.7516BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER2.0ISOBMA ExternalRight HandMetric216BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER2.5ISOBMA ExternalRight HandMetric2.516BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER3.0ISOBMA ExternalRight HandMetric316BMA£9.50 per item · pack of 2In Stock
Sold in packs of 2
16ER3.5ISOBMA ExternalRight HandMetric3.516BMA£9.50 per item · pack of 25 days
Sold in packs of 2
22EL3.5ISOBMA ExternalLeft HandMetric3.522BMA£13.93 per item · pack of 55 days
Sold in packs of 5
22EL4.0ISOBMA ExternalLeft HandMetric422BMA£13.93 per item · pack of 5In Stock
Sold in packs of 5
22EL4.5ISOBMA ExternalLeft HandMetric4.522BMA£13.93 per item · pack of 55 days
Sold in packs of 5
22EL5.0ISOBMA ExternalLeft HandMetric522BMA£13.93 per item · pack of 5In Stock
Sold in packs of 5
22EL5.5ISOBMA ExternalLeft HandMetric5.522BMA£13.93 per item · pack of 55 days
Sold in packs of 5
22EL6.0ISOBMA ExternalLeft HandMetric622BMA£10.69 per item · pack of 55 days
Sold in packs of 5
22ER3.5ISOBMA ExternalRight HandMetric3.522BMA£13.93 per item · pack of 2In Stock
Sold in packs of 2
22ER4.0ISOBMA ViewingExternalRight HandMetric422BMA£13.93 per item · pack of 2In Stock
Sold in packs of 2
22ER4.5ISOBMA ExternalRight HandMetric4.522BMA£13.93 per item · pack of 25 days
Sold in packs of 2
22ER5.0ISOBMA ExternalRight HandMetric522BMA£13.93 per item · pack of 2In Stock
Sold in packs of 2
22ER5.5ISOBMA ExternalRight HandMetric5.522BMA£13.93 per item · pack of 2In Stock
Sold in packs of 2
22ER6.0ISOBMA ExternalRight HandMetric622BMA£13.93 per item · pack of 25 days
Sold in packs of 2

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