_x005fThese are internally threaded and counterbored tubular rivets that can be anchored entirely from one side. With an open end, barrel-shaped flange and protruding boss that is internally threaded, this flat head rivet nut ensures a good performance of fastening. The boss sits within the components being fastened, the flange provides the bearing surface. _x005f_x005f_x005fFeatures: _x005fMade from zinc plated carbon steel which provides strength, corrosion protection and long service life. _x005fWith open end, small flange, round hole, threaded inner wall and partial anti-skid surface, this flat head rivet nut has a good performance as fastener. _x005fConvenient to install, designed to form a bulge on the back side of the panel as a screw is tightened in its threads. _x005fThere are seven different sizes from M3 to M12 that you can choose as needed for various purposes. _x005fEach set includes many pieces of rivet nuts so you don't have to go to hardware store searching rivet nuts for a while. _x005f_x005f_x005fSpecifications: _x005fMaterial: Carbon steel _x005fSurface Finishing: Zinc plating _x005f_x005fColor: As pictures show _x005fType: Flat head rivet nuts _x005fSize and Quantity(Optional): _x005fM3 100pcs_x005f_x005fM4 100pcs _x005fM5 100pcs _x005fM6 100pcs _x005fM8 20pcs _x005fM10 20pcs _x005fM12 20pcs_x005f_x005f_x005f_x005fPackage Included: _x005f1set x Rivet Nuts