Spherical Washer, Bottom Washer Inside Diameter 1.25 in, Bottom Washer Outside Diameter 2.25 in, Bottom Washer Radius 3 in, Finish Plain, For Screw Size 1 1/8 in, Material Stainless Steel, Material Grade/Class 18-8, Maximum Thickness 0.5 in, Minimum Thickness 0.5 in, Pack Size Small Pack, Rockwell Hardness B83 to B95, Spherical Washer Type Spherical Washer Assembly, System of Measurement Inch, Top Washer Inside Diameter 1.187 in, Top Washer Outside Diameter 2.25 in