The grooved bodies of these rivets makes them easy to spot. The mandrel itself is grooved to allow hand riveters to get a better grip. They feature a locking mechanism to keep the mandrel in place and a wide hat to prevent pull-out. These blind rivets come highly recommended thanks to their high tensile and shear strength. It goes without saying that these rivets can only be used for lightweight applications. The body and pin are made of plastic (either polyamide or nylon) and the head is flat. They come in a range of colours and are used for non-conductive materials. These rivets are installed just like standard rivets. These rivets are ideal for thin metal sheet and components likely to deal with vibrations. The pin remains locked and is impossible to extract. They can be used to replace several standard blind rivets in different sizes which can make storage easier. Multi-grip rivets provide a large bearing surface and can fill holes effectively which is handy for dealing with uneven, oblong or misshapen holes. Included in this category are what some manufacturers call 'T-style' blind rivets which have a unique internal locking system which enhances shear strength. Peeled blind rivetsĪs these rivets are set, the body divides into several parts for a larger bearing area which is ideal for fastening metal to soft materials. These rivets can be used to assemble metal and plastic. It's also possible to add a neoprene washer under the rivet head. It's important to follow the recommended hole sizes very closely with this type of rivet. The mandrel head of the rivet is contained within the rivet body which means these rivets provide a perfect seal even under pressure. These rivets are often used to install car licence plates and come in all colours to match the plate itself. It's a good idea to have a range of these inexpensive rivets in your tool box with a hand riveter to cover a variety of DIY jobs. Standard blind rivets are generally the most commonly used rivets. Different types of blind rivets Standard blind rivets Please note: choose a rivet that is too long for your assembly and the tail may protrude which can lead to injuries. Manufacturers will generally indicate a grip range for each type of rivet. Total 1 + Total 2 = correct rivet lengthįor example: 1.5mm metal sheet = (1.5 + 1.5) x 1.1= 3.3 mm.The total thickness of the materials you want to assemble x 1.1 = Total 1.Here is a formula to help you find the right rivet to match the elements you want to assemble: In addition, we have also learned rivet definition, meaning, and various types of rivets.How to calculate the length of a blind rivet Hence, we got a basic idea about the rivet as well as the riveting process. The high strength rivets are used in constructing the metal bridge, hoisting cranes, boiler and pressure tanks.They are used in lap, abutment, and double-cover plate joints.Riveted joints are used where the metals have poor weldability.For the aircraft structure where the aluminium metal is used.Fastening of the sheets and rolled shaped metals.The application of the riveting process is wide, as follows, Stress concentration at the rivet holes of metal plates. This additional thickness and overlapping of plates for riveting increase metal consumption. Then the additional thickness is required to compensate for this problem. The holes may weaken the working cross-section of the plate.Additional operations like the layout and drilling, holes are necessary hence the labour cost of rivets joints is also high.The process of riveting takes more labour time than the welding.The disadvantages of riveting are as follows, The riveted joints can be made without the constraints of location.They have high shear strength and good fatigue resistance.No fumes, gases are produced in riveting unlike welding, the process or riveting is environment friendly.Like in welding similar metals are joined, but there are no requirements of the similar materials, you can join even the dissimilar materials.Apart from metals it can also be used for the non-metals like wood, plastic, asbestos sheet etc.There is no compulsion of ferrous or non-ferrous materials both the metals can be joined with the process of riveting. One of the reasons is the production of cheap.
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