6 -1.00mm Bolt Size Flange Outter Diameter: 12.7mm Zinc Finish Push On Type Retainers Compare with: Auveco #12123, Car Pak # 81-5361, Barnes / Kar # KP76571, Wurth # 150159397, Disco # 1275PK, 1275B, Kimball / Midwest # 10621