There are two kinds of rivet tool, the pneumatic rivet tool and the manual rivet tool. Press the trigger and push the metal into the rivet, then release the trigger so it is held in place. Push the head of the rivet through the holes in the metal then pull and release the handle consecutively until the pin pops.
I assume the rivet you are asking about is a "tinners" rivet and not a more common "blind" rivet (commonly known as a "pop" rivet). If this the case the tool you want is called a "rivet set".
A rivet nut is a rivet that can be removed with a wrench once it is put in. A rivet gun is used to assemble it to plates. Usually a star wrench or and Allan wrench is needed to remove it.
upset -------------------------------------------------------------------------------- Upsetting the rivet is to compress the rivet during the installation process. That can be done with a rivet gun to "hammer" the rivet against a bucking bar, or to use a rivet squeezer to compress the rivet.
A rivet nut is a type of fastener that is used for strong and secure binding of parts for items in the transportation industry, for use in airplane part assembly, for many types of machinery and much more.
You can use a bolt and lock nut, probably 1/4 inch.
you use a spanner to open a rusted nut bolt because you need a strong tool to open a rusted nut bolt.
The same way you tighten any other nut. Use the appropriate tool to the recommended specifications.
UPSET
I think you are referring to a method of locating a nut in a piece of sheet metal. A rivet head nut is a nut with has a small projection not much thicker than the sheet metal to which you intend to fit it. This projection fits through a pre made hole in the sheet metal, and the small projection is peened over (deformed by hammering) to fix the nut to the sheet.
It is a one-piece which is threaded in its interior. Also it has a counterbored tubular rivet. Such tubular rivet can be fully anchored from one side. Two types of rivet nut: One of them is designed in order to form a bulge on the rear side of the panel, the same way that a screw is tightened in its threads. The other type uses also a screw, however it is drawn into the sleeve, instead forming a bulge.
In all such tools, FIRST remove the source of power, air line or electric cable, then dismantle the head of the tool where the rivet is jammed. Most rivet or nail guns have screws that allow the head plate to come off.In all such tools, FIRST remove the source of power, air line or electric cable, then dismantle the head of the tool where the rivet is jammed. Most rivet or nail guns have screws that allow the head plate to come off.