1Made from zinc plated carbon steel which provides strength, corrosion protection and long service life 2With 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 3Convenient to install, designed to form a bulge on the back side of the panel as a screw is tightened in its threads 4There are seven different sizes from M3 to M12 that you can choose as needed for various purposes 5Each set includes many pieces of rivet nuts so you don't have to go to hardware store searching rivet nuts for a whileDescription: _x000D_These 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. _x000D__x000D__x000D_Features: _x000D_Made from zinc plated carbon steel which provides strength, corrosion protection and long service life. _x000D_With 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. _x000D_Convenient to install, designed to form a bulge on the back side of the panel as a screw is tightened in its threads. _x000D_There are seven different sizes from M3 to M12 that you can choose as needed for various purposes. _x000D_Each set includes many pieces of rivet nuts so you don't have to go to hardware store searching rivet nuts for a while. _x000D__x000D__x000D_Specifications: _x000D_Material: Carbon steel _x000D_Surface Finishing: Zinc plating _x000D__x000D_Color: As pictures show _x000D_Type: Flat head rivet nuts _x000D_Size and Quantity(Optional): _x000D_M3 100pcs_x000D__x000D_M4 100pcs _x000D_M5 100pcs _x000D_M6 100pcs _x000D_M8 20pcs _x000D_M10 20pcs _x000D_M12 20pcs_x000D__x000D__x000D__x000D_Package Included: _x000D_1set x Rivet Nuts