Please log in here to access all benefits, including promotional discounts and faster checkouts.

Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand - 27IR4.5WBMA

Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand - 27IR4.5WBMA

SKU:27IR4.5WBMA

The Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand - 27IR4.5WBMA is a versatile cutting insert designed for internal thread turning across a wide range of thread standard... Read more ↓
P
M
K
S
H
Thread TypeInternal
Thread DirectionRight Hand
Thread FormW (BSW BSF BSP BSB)
Pitch4.5
Insert Size27
GradeBMA
Download Cutting Data
£17.79
Prices shown ex. VAT
5 days estimated lead time — subject to availability
View Other Sizes →
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.
Learn more about Klarna
Speak to our team
01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

The Carmex Thread Turning Internal Insert - W (BSW BSF BSP BSB) - Right Hand - 27IR4.5WBMA is a versatile cutting insert designed for internal thread turning across a wide range of thread standards. With its laydown triangular geometry, this insert delivers reliable performance from basic tasks to more demanding applications. Built to meet the needs of engineers, machinists, and maintenance teams, it offers a single, adaptable solution for threading projects.

Whether you're producing simple threaded bores or precision components, this insert supports multiple thread forms—BSW, BSF, BSP, and BSB—minimizing tool changes and expanding your shop's capability. Its right-hand orientation ensures predictable cutting action and consistent results across compatible setups.

  • Universal thread-form compatibility: Covers BSW, BSF, BSP, and BSB, enabling a single insert to tackle a wide range of internal thread tasks.
  • Laydown triangular geometry for smooth, consistent cuts: Provides stable cutting action, effective chip control, and a clean thread finish across both simple and demanding applications.
  • Right-hand performance for reliable results: Designed specifically for right-hand threads, delivering predictable cutting action and long tool life in daily production.

With the Carmex 27IR4.5WBMA insert, you can streamline threading operations, reduce tool changes, and achieve consistent, accurate internal threads faster. Its broad compatibility and durable design help you complete more work per setup and maintain tight tolerances across a variety of materials and applications. Invest in a trusted, versatile solution that supports steady productivity and quality across your internal threading tasks.

Thread Type Internal
Thread Direction Right Hand
Thread Form W (BSW BSF BSP BSB)
Pitch 4.5
Insert Size 27
Grade BMA

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.

★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
Bill
★★★★★
first place we look
honest about stock and prices are competitive.
Phil
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
Graham
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Jeremy

Full Range: Carmex Thread Turning Internal Inserts - Whitworth - Right/Left Hand

View full collection →

You are viewing 27IR4.5WBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
06IL26WBMA InternalLeft HandW (BSW BSF BSP BSB)266BMA£9.43 5 days
06IR18WBMA InternalRight HandW (BSW BSF BSP BSB)186BMA£9.28 In Stock
06IR18WBXC InternalRight HandW (BSW BSF BSP BSB)186BXC£9.28 5 days
06IR20WBMA InternalRight HandW (BSW BSF BSP BSB)206BMA£9.28 In Stock
06IR20WBXC InternalRight HandW (BSW BSF BSP BSB)206BXC£9.28 5 days
06IR22WBMA InternalRight HandW (BSW BSF BSP BSB)226BMA£9.28 In Stock
06IR26WBMA InternalRight HandW (BSW BSF BSP BSB)266BMA£9.28 In Stock
08IL18WBMA InternalLeft HandW (BSW BSF BSP BSB)188BMA£9.43 5 days
08IL19WBMA InternalLeft HandW (BSW BSF BSP BSB)198BMA£9.43 In Stock
08IL20WBMA InternalLeft HandW (BSW BSF BSP BSB)208BMA£11.10 5 days
08IL24WBMA InternalLeft HandW (BSW BSF BSP BSB)248BMA£9.43 In Stock
08IL28WBMA InternalLeft HandW (BSW BSF BSP BSB)288BMA£9.43 5 days
08IR16WBMA InternalRight HandW (BSW BSF BSP BSB)168BMA£9.28 5 days
08IR18WBMA InternalRight HandW (BSW BSF BSP BSB)188BMA£9.28 5 days
08IR19WBMA InternalRight HandW (BSW BSF BSP BSB)198BMA£9.28 In Stock
08IR20WBMA InternalRight HandW (BSW BSF BSP BSB)208BMA£9.28 5 days
08IR24WBMA InternalRight HandW (BSW BSF BSP BSB)248BMA£9.28 5 days
08IR28WBMA InternalRight HandW (BSW BSF BSP BSB)288BMA£9.28 In Stock
11IL11WBMA InternalLeft HandW (BSW BSF BSP BSB)1111BMA£8.59 5 days
11IL12WBMA InternalLeft HandW (BSW BSF BSP BSB)1211BMA£8.59 5 days
11IL14WBMA InternalLeft HandW (BSW BSF BSP BSB)1411BMA£8.44 5 days
11IL16WBMA InternalLeft HandW (BSW BSF BSP BSB)1611BMA£8.44 5 days
11IL18WBMA InternalLeft HandW (BSW BSF BSP BSB)1811BMA£8.59 5 days
11IL19WBMA InternalLeft HandW (BSW BSF BSP BSB)1911BMA£8.44 5 days
11IL20WBMA InternalLeft HandW (BSW BSF BSP BSB)2011BMA£8.59 In Stock
11IL22WBMA InternalLeft HandW (BSW BSF BSP BSB)2211BMA£8.59 5 days
11IL24WBMA InternalLeft HandW (BSW BSF BSP BSB)2411BMA£8.59 In Stock
11IL26WBMA InternalLeft HandW (BSW BSF BSP BSB)2611BMA£8.59 5 days
11IL28WBMA InternalLeft HandW (BSW BSF BSP BSB)2811BMA£8.59 5 days
11IL32WBMA InternalLeft HandW (BSW BSF BSP BSB)3211BMA£8.59 5 days
11IL36WBMA InternalLeft HandW (BSW BSF BSP BSB)3611BMA£11.16 5 days
11IL40WBMA InternalLeft HandW (BSW BSF BSP BSB)4011BMA£11.16 5 days
11IL48WBMA InternalLeft HandW (BSW BSF BSP BSB)4811BMA£11.16 5 days
11IL56WBMA InternalLeft HandW (BSW BSF BSP BSB)5611BMA£11.16 5 days
11IL60WBMA InternalLeft HandW (BSW BSF BSP BSB)6011BMA£11.16 5 days
11IL72WBMA InternalLeft HandW (BSW BSF BSP BSB)7211BMA£11.16 5 days
11IR11WBMA InternalRight HandW (BSW BSF BSP BSB)1111BMA£8.44 In Stock
11IR12WBMA InternalRight HandW (BSW BSF BSP BSB)1211BMA£8.44 In Stock
11IR14WBMA InternalRight HandW (BSW BSF BSP BSB)1411BMA£8.44 5 days
11IR16WBMA InternalRight HandW (BSW BSF BSP BSB)1611BMA£8.44 In Stock
11IR18WBMA InternalRight HandW (BSW BSF BSP BSB)1811BMA£8.44 In Stock
11IR19WBMA InternalRight HandW (BSW BSF BSP BSB)1911BMA£8.44 5 days
11IR20WBMA InternalRight HandW (BSW BSF BSP BSB)2011BMA£8.44 In Stock
11IR22WBMA InternalRight HandW (BSW BSF BSP BSB)2211BMA£8.44 In Stock
11IR24WBMA InternalRight HandW (BSW BSF BSP BSB)2411BMA£8.44 In Stock
11IR26WBMA InternalRight HandW (BSW BSF BSP BSB)2611BMA£8.44 In Stock
11IR28WBMA InternalRight HandW (BSW BSF BSP BSB)2811BMA£8.44 In Stock
11IR32WBMA InternalRight HandW (BSW BSF BSP BSB)3211BMA£8.44 5 days
11IR36WBMA InternalRight HandW (BSW BSF BSP BSB)3611BMA£10.94 In Stock
11IR40WBMA InternalRight HandW (BSW BSF BSP BSB)4011BMA£8.44 5 days
11IR48WBMA InternalRight HandW (BSW BSF BSP BSB)4811BMA£11.16 5 days
11IR56WBMA InternalRight HandW (BSW BSF BSP BSB)5611BMA£11.16 5 days
11IR60WBMA InternalRight HandW (BSW BSF BSP BSB)6011BMA£11.16 5 days
11IR72WBMA InternalRight HandW (BSW BSF BSP BSB)7211BMA£11.16 5 days
16IL10WBMA InternalLeft HandW (BSW BSF BSP BSB)1016BMA£8.59 5 days
16IL11WBMA InternalLeft HandW (BSW BSF BSP BSB)1116BMA£8.44 5 days
16IL12WBMA InternalLeft HandW (BSW BSF BSP BSB)1216BMA£8.44 5 days
16IL14WBMA InternalLeft HandW (BSW BSF BSP BSB)1416BMA£8.44 5 days
16IL16WBMA InternalLeft HandW (BSW BSF BSP BSB)1616BMA£8.59 5 days
16IL18WBMA InternalLeft HandW (BSW BSF BSP BSB)1816BMA£8.59 5 days
16IL19WBMA InternalLeft HandW (BSW BSF BSP BSB)1916BMA£8.59 5 days
16IL20WBMA InternalLeft HandW (BSW BSF BSP BSB)2016BMA£8.44 5 days
16IL22WBMA InternalLeft HandW (BSW BSF BSP BSB)2216BMA£8.44 In Stock
16IL24WBMA InternalLeft HandW (BSW BSF BSP BSB)2416BMA£8.59 5 days
16IL26WBMA InternalLeft HandW (BSW BSF BSP BSB)2616BMA£8.59 5 days
16IL28WBMA InternalLeft HandW (BSW BSF BSP BSB)2816BMA£8.59 5 days
16IL32WBMA InternalLeft HandW (BSW BSF BSP BSB)3216BMA£8.59 5 days
16IL36WBMA InternalLeft HandW (BSW BSF BSP BSB)3616BMA£11.16 5 days
16IL40WBMA InternalLeft HandW (BSW BSF BSP BSB)4016BMA£11.16 5 days
16IL48WBMA InternalLeft HandW (BSW BSF BSP BSB)4816BMA£11.16 5 days
16IL56WBMA InternalLeft HandW (BSW BSF BSP BSB)5616BMA£11.16 5 days
16IL60WBMA InternalLeft HandW (BSW BSF BSP BSB)6016BMA£11.16 5 days
16IL72WBMA InternalLeft HandW (BSW BSF BSP BSB)7216BMA£11.16 5 days
16IL8WBMA InternalLeft HandW (BSW BSF BSP BSB)816BMA£8.59 5 days
16IL9WBMA InternalLeft HandW (BSW BSF BSP BSB)916BMA£8.59 5 days
16IR10WBMA InternalRight HandW (BSW BSF BSP BSB)1016BMA£8.44 In Stock
16IR11WBMA InternalRight HandW (BSW BSF BSP BSB)1116BMA£8.44 In Stock
16IR12WBMA InternalRight HandW (BSW BSF BSP BSB)1216BMA£8.44 In Stock
16IR14WBMA InternalRight HandW (BSW BSF BSP BSB)1416BMA£8.44 In Stock
16IR16WBMA InternalRight HandW (BSW BSF BSP BSB)1616BMA£8.44 In Stock
16IR18WBMA InternalRight HandW (BSW BSF BSP BSB)1816BMA£8.44 In Stock
16IR19WBMA InternalRight HandW (BSW BSF BSP BSB)1916BMA£8.44 In Stock
16IR20WBMA InternalRight HandW (BSW BSF BSP BSB)2016BMA£8.44 In Stock
16IR22WBMA InternalRight HandW (BSW BSF BSP BSB)2216BMA£8.44 In Stock
16IR24WBMA InternalRight HandW (BSW BSF BSP BSB)2416BMA£8.44 In Stock
16IR26WBMA InternalRight HandW (BSW BSF BSP BSB)2616BMA£8.44 In Stock
16IR28WBMA InternalRight HandW (BSW BSF BSP BSB)2816BMA£8.44 In Stock
16IR32WBMA InternalRight HandW (BSW BSF BSP BSB)3216BMA£8.44 In Stock
16IR36WBMA InternalRight HandW (BSW BSF BSP BSB)3616BMA£10.94 In Stock
16IR40WBMA InternalRight HandW (BSW BSF BSP BSB)4016BMA£8.44 In Stock
16IR48WBMA InternalRight HandW (BSW BSF BSP BSB)4816BMA£8.44 In Stock
16IR56WBMA InternalRight HandW (BSW BSF BSP BSB)5616BMA£11.16 5 days
16IR60WBMA InternalRight HandW (BSW BSF BSP BSB)6016BMA£11.16 5 days
16IR72WBMA InternalRight HandW (BSW BSF BSP BSB)7216BMA£11.16 5 days
16IR8WBMA InternalRight HandW (BSW BSF BSP BSB)816BMA£8.44 In Stock
16IR9WBMA InternalRight HandW (BSW BSF BSP BSB)916BMA£8.44 In Stock
22IL5WBMA InternalLeft HandW (BSW BSF BSP BSB)522BMA£12.59 5 days
22IL6WBMA InternalLeft HandW (BSW BSF BSP BSB)622BMA£12.59 5 days
22IL7WBMA InternalLeft HandW (BSW BSF BSP BSB)722BMA£12.59 5 days
22IR5WBMA InternalRight HandW (BSW BSF BSP BSB)522BMA£12.38 In Stock
22IR6WBMA InternalRight HandW (BSW BSF BSP BSB)622BMA£12.38 In Stock
22IR7WBMA InternalRight HandW (BSW BSF BSP BSB)722BMA£12.38 In Stock
27IL4.5WBMA InternalLeft HandW (BSW BSF BSP BSB)4.527BMA£17.79 5 days
27IL4WBMA InternalLeft HandW (BSW BSF BSP BSB)427BMA£17.79 5 days
27IR4.5WBMA ViewingInternalRight HandW (BSW BSF BSP BSB)4.527BMA£17.79 5 days
27IR4WBMA InternalRight HandW (BSW BSF BSP BSB)427BMA£17.46 In Stock