M3 M12 Carbon Steel Flat Threaded Rivet Nut, Flange Rivnut, Nutsert, Fastener, Knurled Head Nutserts(M12（20 pcs/pack）)

High Quality: The flat threaded rivet nut is made from zinc plated carbon steel which provides strength, corrosion and long service life Easy to Use: The rivet nut is convenient to install, designed to form a bulge on the back side of the panel as a screw is tightened in its threads Advantage: 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 Seven Size: There are seven different sizes from M3 to M12 that you can choose as needed for various purposes, can meet you use and replacement Package: Each set includes many pieces of rivet nuts so you don't have to go to hardware store searching rivet nuts for a while