USS Washer, Flat Washer Type USS, Dimensional Standards ASME B18.22.1 Type A Wide, USS Standard, Material Steel, Material Grade/Class Grade 8, Finish Zinc Yellow, For Screw Size 1 1/8 in, Inside Diameter 1.25 in, Outside Diameter 2 3/4 in, Maximum Thickness 11/64 in, System of Measurement Inch, Minimum Thickness 11/64 in, Color Yellow, Material Quality Standards ASTM F436, Pack Size Small Pack, Rockwell Hardness 38HRC, Thickness Tolerance +0.027/-0.029 in, Package Quantity 5