Spherical Washer Assembly, Bottom Washer Inside Diameter 1.063 in, Bottom Washer Outside Diameter 2 in, Bottom Washer Radius 2.75 in, Dimensional Standards TCMAI, Finish Black Oxide, For Screw Size 1 in, Material Steel, Material Grade/Class 12L14, Maximum Rotation 3 Degrees, Maximum Thickness 1/2 in, Minimum Thickness 1/2 in, Pack Size Small Pack, Rockwell Hardness 85 to 90 on 15N Scale, Spherical Washer Type Spherical Washer Assembly, System of Measurement Inch. This item has been restricted from sale in the following state (s): []