There are many types of fasteners. You need something that is both easy to install and reliable. This is why rivet nuts are often the best fastener for the job. Access to the joint is required for most fasteners such as nuts and bolts. Rivet nuts can only be accessed from one side. A tubular rivet nut is inserted in a pre-drilled hole. The mandrel is then screwed into the workpiece to form a tight fitting bulge on the blind side. When the mandrel has been applied to the fastener, it creates a bulge on its blind side for sealing. The difference between rivet nuts and other threaded nuts is their permanent nature. They can be used to hold a threaded insert in place.
For applications that require a long-lasting connection, rivet nuts can be used in place of weld nuts. They can also be used to replace weld nuts and for applications that require a lasting connection. The nut is placed on one side of the workpiece, and then a threaded mandrel is used to secure it in place. The mandrel is tightened and the nut is inserted from one side of the workpiece. A threaded mandrel is then screwed into place.
The spin-spin type uses a mandrel that is threaded onto the nosepiece. It then drives the tool home using a clockwise, screw action to completely compress the nut and create a bulge on its blind side. The tool screws the head in opposite direction to allow it to be removed.