6-1.00mm Screw Size 10mm Hex Size 16mm O.D. Loose Barbed Washer Black Finish Metric Hex Nuts Compare with: Auveco #12595, 16268, G.M. # 11505329 # 11503752, VW # N90100001, Car Pak # 78-4842, W&E # 5922, Barnes / Kar # 1217, Crest / Midwest # CRX603, Kent / Lawson # P51825, Winzer # 395.300, Wurth # 150159366, Disco # 5910PK, 5910B, S&R # 236010