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Carmex Thread Turning Internal Insert - Stub Acme - Right Hand - 27IR4STACMEBMA

Carmex Thread Turning Internal Insert - Stub Acme - Right Hand - 27IR4STACMEBMA

SKU:27IR4STACMEBMA

The Carmex Thread Turning Internal Insert – Stub Acme, Right Hand (27IR4STACMEBMA) is a compact, high‑precision tool designed for cutting internal threads in a wide range of materials. Featuring ... Read more ↓
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M
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Thread TypeInternal
Thread DirectionRight Hand
Thread FormStub Acme
Pitch4
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£25.22
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 – Stub Acme, Right Hand (27IR4STACMEBMA) is a compact, high‑precision tool designed for cutting internal threads in a wide range of materials. Featuring a laydown triangular geometry, this insert covers the majority of existing thread standards, enabling dependable performance from simple tasks to demanding production work.

  • Broad thread standard coverage: The laydown triangular geometry and precise edges provide reliable performance across a wide range of internal thread standards, reducing tool changes and keeping your workflow efficient.
  • Durable carbide construction: Built to withstand demanding materials and long service life, this insert maintains sharpness and consistent thread quality even under heavy milling and tough conditions.
  • Easy setup and repeatable results: Secure seating in the holder and stable alignment promote quick setup, smooth chip flow, and repeatable, high-quality threads on every job.

This insert helps you finish internal threading with confidence: it supports faster turnaround on projects, minimizes downtime, and delivers consistent thread quality across diverse materials. By simplifying setup and delivering dependable performance, it boosts productivity and helps you meet tight tolerances without guesswork.

Part Numbers

Protool Part Number
27IR4STACMEBMA
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 - STACME - Right/Left Hand

View full collection →

You are viewing 27IR4STACMEBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
16IL10STACMEBMA InternalLeft HandStub Acme1016BMA£12.06 In Stock
16IL12STACMEBMA InternalLeft HandStub Acme1216BMA£12.06 5 days
16IL14STACMEBMA InternalLeft HandStub Acme1416BMA£9.25 5 days
16IL16STACMEBMA InternalLeft HandStub Acme1616BMA£9.25 5 days
16IL6STACMEBMA InternalLeft HandStub Acme616BMA£12.06 In Stock
16IL8STACMEBMA InternalLeft HandStub Acme816BMA£12.06 In Stock
16IR10STACMEBMA InternalRight HandStub Acme1016BMA£12.06 In Stock
16IR12STACMEBMA InternalRight HandStub Acme1216BMA£12.06 In Stock
16IR14STACMEBMA InternalRight HandStub Acme1416BMA£12.06 In Stock
16IR16STACMEBMA InternalRight HandStub Acme1616BMA£12.06 5 days
16IR8STACMEBMA InternalRight HandStub Acme816BMA£12.06 5 days
22IL4STACMEBMA InternalLeft HandStub Acme422BMA£13.66 5 days
22IL5STACMEBMA InternalLeft HandStub Acme522BMA£13.66 In Stock
22IR4STACMEBMA InternalRight HandStub Acme422BMA£17.78 5 days
22IR5STACMEBMA InternalRight HandStub Acme522BMA£17.78 In Stock
27IL3STACMEBMA InternalLeft HandStub Acme327BMA£19.37 In Stock
27IL4STACMEBMA InternalLeft HandStub Acme427BMA£19.37 In Stock
27IR3STACMEBMA InternalRight HandStub Acme327BMA£19.37 5 days
27IR4STACMEBMA ViewingInternalRight HandStub Acme427BMA£25.22 5 days

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