Heads, Threads & Finishes FAQs

This section of our guides and tips hub answers frequently asked questions about the various heads, threads and finishes you'll find among our various product ranges. Find out which are appropriate for your projects.

Can BSW and UNC threads be interchanged?

Are you are struggling to find a BSW thread (British Standard Whitworth) or a UNC thread (Unified National Coarse). If so, not to worry, they are interchangeable.

My Fastener has an Unusual Head - How Do I Remove It?

If you have found a screw with an unusual head then it’s likely that you have come across a security screw. Take a look at how's best to remove it.

What Is BS Cycle Thread?

A BS Cycle Thread an imperial thread that was originally engineered for use on bikes and motorcycle. Find out more about them.

What is the Difference Between A2 and A4 Stainless Steel?

Stainless steel comes in different varieties, commonly referred to as grades. The most common grades that we come across in the fasteners industry are called A2 and A4. Find out more.

Can High Strength Fasteners be Plated

We are often asked about the electro plating of high strength fasteners. Find our what electro plating is and how it works.

What is European Standard EN 10204 3.1?

EN 10204 3.1 is an engineering standard. Sometimes referred to as a 3.1 certificate, it confirms that the product being manufactured is fully compliant. Find out more.