Black UL94 V-2 Nylon Flat Mini Tough Push-In Rivet - Compatible Hole Diameter Range 3.1 - 3.3 mm (0.122 - 0.128 in) Compatible Panel Thickness Range 3.3 - 3.9 mm (0.130 - 0.155 in) Anchor Length 8.8 mm (0.345 in)