What is a Pop Rivet?
POP rivets connect two pieces of material in a quick, efficient manner with a hand riveter or pneumatic rivet gun. They are tubular and comprised of a hat and mandrel; the mandrel's length snaps off when installed. The hat and mandrel can be made from the same material or a combination of two materials. Rivets are measured in installed grip range and length.
Trade Names: Blind, Domed Open End, Closed End, Countersunk, Large Flange Open End, Multi Grip and Structural Rivets
How do Pop Rivets work?
Pop Rivets comprise of two parts. The initial segment is known as the rivet body (also called shell or cap), and the second part is known as the mandrel (also called the stem).
Where access to the two sides of a segment is constrained, a hole is first made through the parts to be joined. A pop rivet is then embedded through the hole. The rivet body is then brought into contact with the parts. A pop rivet gun is set on the rivet, pulling the mandrel into the rivet body, making it grow and grasp the pieces together. Once gripped, the mandrel snaps, holding the rivet in place.
How many varieties of Blind Rivets are available?
The answer is MANY! See the list of available options and descriptions below:
Open End Rivets
Open-end blind rivets create a fast and tight assembly; however, they are not watertight. Open End Rivets get their name because the mandrel is exposed at the rivet's bottom before installation. Open-end rivets are available in stainless steel, aluminum, and zinc-plated steel. Color options are available in aluminum for this type.
Closed End Rivets
Closed-End Blind Rivets differ from a standard pop rivet in that they feature a flat, closed end, which creates a watertight seal. Also known as a waterproof rivet, they are distinguished by their flat top. The mandrel is encased within the blind rivet itself.
A countersunk blind rivet, also known as a Flat Rivet, is used in countersunk holes and, once set, finish flush to the surface. They are used in tracks where the head will not protrude into sliding tracks or rollers. The hat of the rivet is almost inverted, with a 120-degree countersink in the integrated washer.
Large Flange Rivets
Large flange, also known as Oversized, have a larger washer on the hat than standard. Large Flange Rivets are tubular, comprised of a hat and mandrel; the mandrel's length is snapped off when installed.
Multi Grip Rivets
Multi-Grip Rivets can substitute in applications where the thickness of the riveted material varies. One Multi-Grip Rivet has a grip range of different sizes. This grip range allows for flexibility in design and a lower rivet inventory. One size of Multi Grip rivet can be suitable for a variety of jobs, including mismatched holes. One Multi-Grip Rivet can be used as an equivalent for at least three different rivet sizes.
Tri-Fold / Exploding Rivets
Tri-Fold Rivets are designed to create three anchor points on the blind side of the installation. This makes a wider bearing load spread, which is ideal for thin metals and plastics. Tri-Fold Rivets are commonly used in automotive, trailer, and appliance applications.
Structural / Interlock Rivets
Structural or interlock blind rivets create a more robust assembly than standard pop rivets because of the amount of force they generate. Domed head rivets in this selection are commonly referred to as both Interlock and Structural Rivets.
Pop Rivet Assortment Kits
Assorted Size Runs of Blind Rivets
These fastener assortment kits include popular size runs of pop rivets in domed head, countersunk, closed end and large flange varieties in both 304 stainless steel and aluminum. Pop Rivets included in Rivet Kits are either corrosion resistant Stainless Steel, or lightweight Aluminum as described in each kit title.
POP Rivet Types and Materials | Fasteners 101
POP Rivet Types and Materials Transcript
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Bob: Welcome back to Albany County Fasteners - Fasteners 101. I'm Bob and today we're going to talk about the different types of rivets available and the materials they come in. So, let's get started.
So, let's review the different materials available and types of rivets. This is a structural rivet. This particular rivet is steel and steel. The mandrel is steel, and the hat is steel. This is what they call a blind rivet.
These three are aluminum rivets. These are just typical pop or blind rivets, in aluminum. We also have what we call a white hat rivet with an aluminum mandrel. So, here's the mandrel and that's the white hat, so when you put the rivet in and complete it all you're gonna see is a white finish like for a white soffit or a brown soffit. They come in different colors depending upon the finish that you're installing them in.
These are zinc plated rivets. These are large flange. You can see here, the large dome flange on this hat. So it covers more surface when you're installing. These are copper/brass rivets. The mandrel is brass and the hat is copper.
These are copper rivets (with a copper hat and copper plated mandrel. A lot of roofers use these rivets for flashing and many other applications, soffits, downspouts. So many different applications for the brass.
These are stainless blind pop rivets. I have several different types and this is what we call a closed end pop rivet. You can see here the back is square and solid. These are waterproof, so if you install these in a water application, these will not leak or build water up inside the tubular part of the rivet.
These are also stainless countersunk pop rivets. You'll see that there's a, I believe it's a 33 degree hat, on here. So when you install this rivet it will be flush with the material. So, these are installed in a lot of things like tracks, that you're, putting a rail in or something along that that you just don't want any type of head sticking up.
Then we have what we call multi-grip rivets. With multi-grip, they're based upon increments of 2. So a multi-grip will go from: 4-2, 4-4 and 4-6. So it will cover three different lengths. That's why they call them multi-grip rivets.
And that's basically the materials that blind pop rivets come in and the different types of rivets.
Pop Rivets Sizes
|Rivet Series #||Nominal Size||Drill Size||Hole Size |
Max - Min
|Rivet #||Grip Range |
0.100 - 0.097
0.133 - 0.129
|4-1||0.020 - 0.062||0.212|
|4-2||0.063 - 0.125||0.275|
|4-3||0.126 - 0.187||0.337|
|4-4||0.188 - 0.250||0.400|
|4-5||0.251 - 0.312||0.462|
|4-6||0.313 - 0.375||0.525|
|4-8||0.376 - 0.500||0.650|
|4-10||0.501 - 0.625||0.775|
|4-12||0.626 - 0.750||0.900|
|4-14||0.751 - 0.875||1.025|
0.164 - 0.160
|5-2||0.063 - 0.125||0.300|
|5-3||0.126 - 0.187||0.362|
|5-4||0.188 - 0.250||0.425|
|5-6||0.251 - 0.375||0.550|
|5-8||0.376 - 0.500||0.675|
|5-10||0.501 - 0.625||0.800|
|5-12||0.626 - 0.750||0.925|
|5-14||0.751 - 0.875||1.050|
|5-16||0.876 - 1.000||1.175|
|5-18||1.001 - 1.125||1.300|
0.196 - 0.192
|6-2||0.020 - 0.187||0.325|
|6-3||0.126 - 0.187||0.387|
|6-4||0.188 - 0.250||0.450|
|6-6||0.251 - 0.375||0.575|
|6-8||0.376 - 0.500||0.700|
|6-10||0.501 - 0.625||0.825|
|6-12||0.626 - 0.750||0.950|
|6-14||0.751 - 0.875||1.075|
|6-16||0.876 - 1.000||1.200|
|6-18||1.001 - 1.125||1.325|
|6-20||1.126 - 1.250||1.450|
|6-22||1.251 - 1.375||1.575|
0.261 - 0.257
|8-2 ||0.020 - 0.125||0.375|
|8-4 ||0.126 - 0.250||0.500|
|8-6 ||0.251 - 0.375||0.625|
|8-8 ||0.376 - 0.500||0.750|
|8-10 ||0.501 - 0.625||0.875|
|8-12||0.626 - 0.750||1.000|
|8-14||0.751 - 0.875||1.125|
|8-16||0.876 - 1.000||1.250|
|8-18||1.001 - 1.125||1.375|
|8-20 ||1.126 - 1.250||1.500|
|8-22 ||1.251 - 1.375||1.625|
|8-24 ||1.376- 1.500 ||1.750|
Need more rivet information?
For more information on rivets including numbers (6-6 or 66), measurements, how to install rivets, grip range and more, please review our Rivet Guide in Fasteners 101.
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