BOLT U 2INXM10 DIA SUS304 W/4NUTS :

Nuts are thread holed fasteners coupled with bolts in order to fasten multiple parts together. stainless steel nutserts  are a threaded insert, which are designed to provide load bearing threads when installed in materials that are too thin to be in blind holes or to be tapped. Stainless steel metric rivet nuts are a one-piece internally threaded fastener. These 316 stainless steel nuts are counterbored and tubular, hence, they can be anchored entirely from one side.

There are two kinds of stainless steel nuts -  one is designed in such a way that there is a bulge  formed on the back side of the panel when a screw is tightened in its threads. The other nut is drawn in a similar fashion using a screw, but instead of forming a bulge, these SS nuts are drawn into the sleeve.

Stainless steel 304 nuts are designed specifically keeping the welding needs of the applications in mind. Therefore, stainless steel nut can be welded together to another object. stainless steel metric flange nuts have a wide flange  or a wide rim at one end of the nut. This flange acts as an integrated washer by distributing the load created by the threaded bolts. Stainless steel metric jam nuts are essentially thin nuts. These nuts are used as a second nut which is usually "jammed" or tightened against a full size nut or they can be used alone as a thin nut.  Therefore the name of the nut is a derivative of its function.

The main function of metric stainless steel coupling nut is to fasten two metric rods, bolts or studs together and to space two materials away from each other. metric coupling nuts are also called metric standoff nuts, Nut and Round Coupler by Stainless steel nuts manufacturers in India.