6.3 - 1.81 x 25mm 10mm Indented Hex Head 17mm Outside Diameter Loose Washer Black Phosphate Finish Sheet Metal Screws Compare with: Auveco #12339, Car Pak # 99-8407, 998407, G.M. # 11500996, GM# 11505023, W&E # 2634, Barnes / Kar # CP99-8407, CP998407, Crest / Midwest # CRX8830, Disco # 5955PK, 5955B, Kent / Lawson # P38617, Wurth # 150159050, S&R # 216200