To retain a rivet set in the rivet gun, a coiled retainer spring is screwed onto the. That is because the driving end of the set will have a cup-like depression that conforms to and fits over the rivet head shape and size to be driven. Round head rivets are more traditional, leaving a smooth round fastener head visible after installation. Each raised head rivet size requires the use of a similar size 'cupped rivet set' as it is sometimes called. The flush head rivets are commonly countersunk at 82 degrees and 100 degrees and are installed into a countersunk hole. ![]() Solid rivets are installed by securing the rivet ‘head’, while hammering the opposite side to plastically deform, or by use of an air powered or other mechanical rivet compression tool that will secure the ‘head’ and compress the rivet shaft at the same time.įlush and Round Head Rivets: Both blind rivets and solid rivets can have a flat/countersunk head as well as a round head. ![]() It has a rivet length of 0.250 inches, a grip range of 0.063 inches to 0.125. Solid Rivets: A solid metal shaft with a rivet ‘head’ on one end. Its single shear strength is 550 pounds and its tensile strength is 700 pounds. The most common general aviation aircraft fastener is the solid rivet. Reamers should be available for both clearance and interference fit hole sizes. The aligning step diameter matches the core drill bit size. The aligning step diameter matches the pilot drill bit size. The mandrel is ultimately broken off, flush with the rivet head. Step drill bits are used to step the hole to approximately 164-inch smaller than the final hole size. These rivets are installed by pulling the mandrel from the rivet ‘head’ end, deforming the opposite side. Measure the total thickness of the materials you need to fasten. ![]() Rivet suppliers would recommend you 6.35 mm (1/4') rivets unless you want custom-sized 6.0 mm rivets. The most common rivets used are:īlind Rivets: A tubular rivet with a mandrel in the center. Multiply that thickness by 3 to find the suitable minimum diameter for your materials. Rivets are permanent mechanical fasteners that plastically deform to maintain axial loading on a joint. Just two sizes of this rivet covers a grip range from 1 to 16 mm. Solid Rivet Length = thickness of joint + material needed for full head.Ĭhoosing the correct rivet length for structural and nonstructural purposes is important for making full use of the material properties of the chosen rivet. Being a multigrip rivet, it offers the possibility to work in a big variety of grip ranges. Countersunk Head the rivet body length (L) is always measured from the top of the head to the end of the body. TL:DR – Grip length = thickness of joint.
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