![]() ![]() The simplest power tool for installing rivet nuts is the pneumatic “spin-spin” tool. They can also be mounted to six-axis robots. The latter can be handheld or mounted to a linear actuator for fully or semiautomatic operation. ![]() The former are similar to tools for installing blind rivets. Rivet nuts can be installed with hand tools or, more commonly, power tools. The closed end thus prevents the ingress of water and dust into the interior of the assembly. The latter are ideal for applications, such as attachment points on vehicle exteriors, in which the mating screw will not necessarily be present. Rivet nuts are also offered in open- and closed-end versions. For some manufacturers…it’s cheaper to make a round hole than a hex-shaped hole.” “The downside of a hex-shaped fastener is that it requires a hex-shaped hole. “With a hex-shaped fastener, you don’t have that issue. “If they’re not set just right, round rivet nuts can spin in the hole at high torque levels,” explains Lanni. Such variations are all designed to do one thing: keep the fastener from turning in the hole, particularly in softer materials, such as aluminum and plastic. The standard rivet nut is cylindrical with a smooth surface, but variations include splined, square and hexagonal bodies. Rivet nuts also come in many body styles. The wedges aren’t going to be very effective on steel parts.” “However, rivet nuts are annealed, so they’re relatively soft. “The wedge head is great for soft materials like plastic, fiberglass and aluminum,” says Kull. Wedges or knurls underneath the head are designed to bite into the mating material and prevent the fastener from turning in the hole. Countersunk and low-profile heads ensure flush or near-flush installation. A thick flange can act as a spacer and provide some extra push-out strength. It’s also possible to apply a sealant beneath the flange for weatherproof applications. This reinforces the hole and prevents push-through. A wide front-side flange provides a large load-bearing surface. Rivet nuts are available with a variety of head styles. A 1.45-inch long rivet nut has a grip range of 0.35 to 0.5 inch. ![]() For example, a 0.42-inch long SpinTite rivet nut from PennEngineering offers a grip range of 0.02 to 0.08 inch. Setting Effort - Setting Effort is the tensile force necessary to cause the riveting force to assemble the insert nut, this is measured in newtons.A single fastener size can typically accommodate a wide grip range.Torque Test - The torque is the strength which is used to tighten the screw in order to secure the attachment of parts without causing breakage, this is measured in newton meters.Will not deform or cause discolouration of the materialĪll our rivet nuts are tested as advised in the table and shown in the below diagram the following features are checked for quality & performance purposes.Can be set from one side, Where the rear of the material and the inside of the object are inaccessible.Blind rivet nuts have the same properties as a tapper thread in full material, Because of the strong flush flange after deformation of the rivet nuts.Part-on Stock a range of full hexagon rivet nuts M6 Steel Full Hex Flat Head Open POP Rivet Nut ![]()
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