291315 Hub. 5-1/4" Overall Diameter, Mounting Holes: 4 Used & 7/16" Diameter, Threaded Type, 3-7/8" Spacing. Relief Diameter: 1-9/16", Depth: 7/16". 13 Spline Center Bore, 7/8" Diameter. Associated Components: 291951, 292222 and 7701044 Shafts. Fits Ford Loader 730.