#6 to #8 Screw Size Stem Length: 8.3mm Head Size: 11 x 13.6mm Black Nylon Cowl Vent Nuts
Compare with: G.M. # 15596280, Disco # 11863PK, 11863B, Auveco # 14037, Car-Pak # 88-6410, 886410, Crest / Midwest # CRX2782, Kent / Lawson # P33432, Winzer # 502.30381