GOOD STALLING RESISTANCE: Good resistance to stalling, no teething stuck, long service life. Knurled Flat Round Head Cylindrial Rivet Nuts M3 M4 M5 M6 M8 M10 Carbon Steel Stainless Steel M3 Threaded Inserts Leatikall Rivet Nut, M3-M12 Carbon Steel Flat Threaded Rivet Nuts For Sale Rivnuts® perform as a blind rivet to bind two or more materials together and as a nut for attaching a mating part with a screw into its internal threads DC 6V POWER SUPPLY: Powered by easy-to-access DC 6V power supply, more simple and convenient to use. Large Flange Steel Closed End s | Fastening Systems Specifications:Material: Carbon steelSurface Finishing: Zinc platingColor: As pictures showType: Flat head rivet nutsSize and Quantity(Optional):M3 100pcsM4 100pcsM5 100pcsM6 100pcsM8 20pcsM10 20pcsM12 20pcsPackage Included:1set x Rivet Nuts