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

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER27UNBMA

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER27UNBMA

SKU:16ER27UNBMA

Carmex Thread Turning External Insert – Right Hand – 16ER27UNBMA is a versatile, laydown triangular insert designed for external threading. It supports UNC, UNF, UNEF, and UNS standards, making i... Read more ↓
P
M
K
S
H
Thread TypeExternal
Thread DirectionRight Hand
Thread FormUN (UNC UNF UNEF UNS)
Pitch27
Insert Size16
GradeBMA
Download Cutting Data
£8.44
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

Carmex Thread Turning External Insert – Right Hand – 16ER27UNBMA is a versatile, laydown triangular insert designed for external threading. It supports UNC, UNF, UNEF, and UNS standards, making it a practical choice for shops that handle a mix of fastener threads. Ideal for engineers, machine operators, and fabricators, it helps you produce accurate threads with reliable consistency.

As part of an industry-leading line, this insert is built to tackle a wide range of applications—from straightforward threading tasks to more demanding production work. The laydown triangular geometry provides broad engagement and stable performance across common materials, helping you reduce tool changes and keep projects on track.

  • Universal thread standard compatibility: Supports UNC, UNF, UNEF, and UNS external threads, reducing the need for multiple inserts and simplifying stocking for mixed-thread projects.
  • Triangular laydown geometry for reliable cutting: Provides stable engagement and consistent thread profiles across a range of materials, helping you achieve repeatable results with fewer adjustments.
  • Right-hand threading design: Optimized for right-hand threads, ensuring correct lead direction and dependable performance across common diameters.

This combination of versatility, robust geometry, and controlled performance helps you streamline threading operations, shorten cycle times, and maintain high-quality threads across your production or workshop workflows. With Carmex, you gain a dependable tool for efficient external thread turning that you can trust across basic tasks and more demanding applications alike.

Thread Type External
Thread Direction Right Hand
Thread Form UN (UNC UNF UNEF UNS)
Pitch 27
Insert Size 16
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 External Inserts - Unified - Right/Left Hand

View full collection →

You are viewing 16ER27UNBMA. Click any other SKU to view its full details.

Product SKUThread TypeThread DirectionThread FormPitchInsert SizeGradePriceStock Order
16EL10UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1016BMA£8.44 5 days
16EL11.5UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)11.516BMA£8.59 5 days
16EL11UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1116BMA£8.44 5 days
16EL12UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1216BMA£8.44 5 days
16EL13UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1316BMA£8.44 5 days
16EL14UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1416BMA£8.44 In Stock
16EL16UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1616BMA£8.44 5 days
16EL18UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)1816BMA£8.44 In Stock
16EL20UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)2016BMA£8.44 5 days
16EL24UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)2416BMA£8.44 5 days
16EL27UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)2716BMA£8.59 5 days
16EL28UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)2816BMA£8.44 5 days
16EL32UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)3216BMA£8.44 5 days
16EL36UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)3616BMA£11.16 5 days
16EL40UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)4016BMA£11.16 5 days
16EL44UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)4416BMA£11.16 5 days
16EL48UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)4816BMA£11.16 5 days
16EL56UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)5616BMA£11.16 5 days
16EL64UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)6416BMA£11.16 5 days
16EL72UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)7216BMA£11.16 5 days
16EL8UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)816BMA£8.44 5 days
16EL9UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)916BMA£8.44 5 days
16ER10UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1016BMA£8.44 In Stock
16ER11.5UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)11.516BMA£8.44 In Stock
16ER11UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1116BMA£8.44 In Stock
16ER12UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1216BMA£8.44 In Stock
16ER13UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1316BMA£8.44 5 days
16ER14UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1416BMA£8.44 5 days
16ER16UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1616BMA£8.44 5 days
16ER18UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)1816BMA£8.44 In Stock
16ER20UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)2016BMA£8.44 In Stock
16ER24UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)2416BMA£8.44 In Stock
16ER27UNBMA ViewingExternalRight HandUN (UNC UNF UNEF UNS)2716BMA£8.44 5 days
16ER28UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)2816BMA£8.44 In Stock
16ER32UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)3216BMA£8.44 5 days
16ER36UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)3616BMA£10.94 In Stock
16ER40UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)4016BMA£10.94 In Stock
16ER44UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)4416BMA£10.94 5 days
16ER48UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)4816BMA£10.94 In Stock
16ER56UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)5616BMA£10.94 In Stock
16ER64UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)6416BMA£10.94 In Stock
16ER72UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)7216BMA£10.94 In Stock
16ER8UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)816BMA£8.44 In Stock
16ER9UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)916BMA£8.44 5 days
22EL5UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)522BMA£12.59 5 days
22EL6UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)622BMA£12.59 5 days
22EL7UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)722BMA£12.59 5 days
22ER5UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)522BMA£12.38 In Stock
22ER6UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)622BMA£12.38 In Stock
22ER7UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)722BMA£12.38 In Stock
27EL4.5UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)4.527BMA£17.79 5 days
27EL4UNBMA ExternalLeft HandUN (UNC UNF UNEF UNS)427BMA£17.79 5 days
27ER4UNBMA ExternalRight HandUN (UNC UNF UNEF UNS)427BMA£17.46 In Stock

Complete Your Project

with tools we think you'll like