Uxcell a15062900ux0078 4mm Thread Dia Zinc Plated Rivet Nut Insert Nutsert Brass Tone 100Pcs Product Name: rivet nut; material: zinc plated,metal Type: flat head; weight: 123G Color: brass tone Thread diameter: 4mm/0.16"; sleeve inner diameter: 5mm/0.2"; sleeve outer diameter: 6mm/0.24" Cap size: 9x1mm/0.35"X0.04"(D*t); total size: 9x11mm/0.35"X0.4"(Max.D*l); Package Content: 100(+/-2%)pcsx rivet nuts