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How to Measure a Rivet

Using a Rivet Gauge to Measure a Rivetrivet gauge

Many of our customers get in contact with us and ask us how to measure rivets. We used to find rivets annoying to measure ourselves, until we found this. This rivet measuring gauge is perfect for measuring rivets. We are so sure that it’s the perfect measuring tool we use it ourselves in our warehouse.

Made of sturdy plastic, this tool comes with preset sizes and lengths used to measure all kinds of rivets. So, where should we begin?



Understanding a Rivet

Rivets are odd-looking fasteners composed of two parts. The hat and the mandrel. The hat is the short stubby side which needs to be measured for its length and diameter. The mandrel is the long thin end that is pulled off of the rivet during the installation process.

To understand what size rivet you will need you need to determine the diameter of the hole to be filled and the material installation thickness. You then need to find a rivet size that fits this range.

Measuring a Rivet Using the Gaugemeasuring rivet diameter

So, first things first, we are going to place the hat of the rivet into the circular holes on the rivet gauge. The holes represent different diameters that rivets come in. When you place the rivet into the hole it should be a snug fit. If you have a lot of wiggle room then you are probably in a size that is too big. On the other side, if you cannot fit the hat into the hole the hole is probably too small. The diameter of our test rivet was 4.

Next we are going to measure the length of the rivet. insert the hat into the open-ended top areas. You will want to make sure the rivet’s washer or flange area is pressed up against measuring rivet lengththe top of the plastic. As you can see from our example, the first section did not properly house the hat of our example rivet so we had to check the next size up. After checking that we determined that our length was 4.

This rivet is a #4-4.

What Comes Next?

Now that you know the size of your rivet you can find out what range it fits to determine if it is the proper rivet to fit your needs.

For everything you will ever need to know about rivets we have compiled all of our information about rivets onto our free Fasteners 101: Rivets Guide Resource. Please check it out to find any information you are looking for.

If you are interested in buying one of these tools, check out our Rivet Gauge page to learn more.

Tool: Rivet Gauge

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