A GUIDE TO RIVET SIZES
Here at About Town Bolts we often get asked how our rivet listings work in terms of sizing so I thought I'd compile a quick guide to help you understand what each part of our listings refer to and hopefully remove some of the confusion surrounding rivet sizes.
Below I have included a basic diagram of a rivet and it's different dimensions to help explain.
As you can see our rivet is made up of 4 key dimensions A, B, C and D. Let's have a look at A and B to start with. Below you will see one of our rivet listings pictures which includes the text 3.2 x 6mm at the top of the picture.
3.2 refers to the diameter of the rivet (dimension A in our diagram). This is the measurement needed to get the correct rivet for the size of hole you wish the rivet to go into. Ideally you want to go for the closest size that is smaller than the hole you wish to place the rivet into. For instance a hole 6.5mm across would require a 6.4mm rivet, for a 5mm hole you'd go for a 4.8mm rivet etc.
Secondly 6mm in our listing refers to the length of the rivet (dimension B in our diagram). This is measured from the underside of the flange (dimension D) in all rivets apart from Countersunk where the measurement is taken from the topside as the rivet will, by nature, sit flush to the panel being riveted. The easiest way to find out what length of rivet you need is to measure the thickness of the panels you wish to rivet together. This measurement can then be checked against the rivets 'Grip Range' (the range the rivet will compress to) which can be found in all of our rivet listing description pages. For instance if the panels are 11mm thick with a 3.3mm hole requiring a standard rivet you would need to go for the 3.2 x 15mm as this has a Grip Range of between 9 - 12mm.
Lastly comes the flange diameter (dimension C) this is usually roughly double the diameter of the rivet body apart from on Large Flange Rivets where the flange is much wider than standard. You can find the diameter of our large flange rivets within their individual item descriptions.