Flanged Button

What Are Metric Socket Flanged Button Screws ISO 7380-2

Hex socket flange button head screws are a type of socket screw, similar to a socket button head but with an added flange. This flange increases the diameter of the head of the screw, opening up their usage to applications where a smaller head is not suitable.

Socket flanged button heads are perfect for use where there is a need to protect softer materials or to avoid warping. The increased diameter of the flange helps to distribute the load when tightening the screw evenly.

Although most people do not use washers with them, if need be, you can use a shake proof washer if there is a risk of them vibrating loose. A penny washer can also be used to extend the head diameter further on very soft or thin materials.

Flanged buttons are tightened by inserting an Allen key into the hex socket in the centre of the head. Like all other socket screws, this makes them ideal for where space may be limited above the head.

People often use hex socket flange buttons where a tidy, low-profile head is needed. This can be for aesthetic reasons or there may be a need for a smooth tidy snag-free finish.

They are manufactured to the precise standards of ISO 7380-2 which defines all the applicable dimensions for all sizes. In addition, the metric threads are produced to the strict tolerances of the ISO 965-1 spec.

Socket Flanged Button Screws Spec – The ISO 7380-2 Specifications

We have created a handy spec sheet that outlines the full ISO 7380-2 spec for you which can be downloaded as a PDF.

In our article Socket Flanged Button Screws: An Ultimate Guide To ISO 7380-2, you can download the ISO 7380-2 PDF. It is also a good place to further read up on these useful screws.

Difference Between Socket Flanged Button Screws and Socket Dome Flange Head Screws

Socket dome flange head screws are often also called socket dome flange screws. These are just the same thing as a flanged socket button head. There can be many different variations in the names that people give these screws, another couple that people often use are flanged dome heads and socket flange dome screws.

The reasons why some people refer to these as socket dome flange screws are fairly obvious. If you were to look at the screws, the first things that come to mind are the wide diameter of the head with a raised dome in the middle.

As long as you see any of these names accompanied by ISO 7380-2, you will know that they are the same screws.

Hex Socket Flange Button Head Screws Materials

Flange buttons come in many different materials and care should be taken to ensure you select an appropriate one for your application.

We currently list A2 stainless steel flanged button head in many different sizes, if you do not see a size you need, contact us and we will source it for you. As well as A2 stainless we can also source A4 stainless steel socket flange button head if you will be using them in or around a marine environment.

As well as stainless steel, we can also source 10.9 zinc plated flange button and 10.9 self-colour flanged button head in many different sizes.

Hex Socket Flange Button Heads Sizes

If the need arises, these are available from M2 right up to m12, although the smaller and larger sizes are not as common.

Our stock range starts at M3 and goes up to M8 as these are the most commonly used sizes.

Although we typically only hold M3 - M8, we can easily source any size you need. Just let us know your requirements and we will be happy to help.

Flanged button heads are always fully threaded. Their available lengths however are a little shorter than some other types of socket screws and bolts. You can read about the different types in our article socket screws: the ultimate guide to a screw with socket.

Hex Flanged Button Head Screws Manufacturing

If you need a flanged button head that you cannot easily find available on the shelf, you may need to have it specially manufactured to your spec.

Speak to us and send us your requirements, whether you need a different thread pitch, a longer length or you need them in a material that you can not find elsewhere. We have the experience and expertise to make it happen for you. Even if you have a tight timeline, we can try to slot it in to make it happen for you.

At Bolt Base, we are not restricted to our online stock range, this is just a fraction of what we can and do supply. We are well known for our capabilities in sourcing button head screws and any other fixings and fasteners that other suppliers simply can’t, or even won’t.

If you have any questions you would like us to answer on hex socket dome heads, feel free to contact us and one of our friendly team will be happy to help you out.