![]() The fastener is then inserted into a hole in the workpiece. The fastener is threaded onto a mandrel at the end of the tool. 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. See more details, video, parts breakdown, and operation manual.A single fastener size can typically accommodate a wide grip range. The leading rivet nut manufacturers strongly recommend High strength "Spin Pull" installation action for thick wall rivet nuts. The BP-60 will install essentially all of the common American and European Rivet Nuts. Recommended operating air pressure is 80-100psi. of pulling force to set up to 1/2 (M12) steel rivet nuts with ease. "More Power" means this tool uses its huge 6800 lbs. Comes complete with sizes 8-32 through 1/2-13 or M4 through M12. Stroke adjustment is quick and easy, and is done from exterior of the riv nut tool. The BP-60 Rivet Nut tool has a fully adjustable stroke for accurate insert placements, which requires less operator skill. In one touch the fastener quickly spins on, pulls the fastener, and with the release button, spins out of the fastener. ![]() This rivet nut tool features a SPIN-PULL-SPIN setting sequence.
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