Marson, SS-10, Back-Up Washers (Marson), Unit of Measure: Inch, 0.192 Inch Inner Diameter, 0.500 Inch Outer Diameter, Material: Steel, Finish: Zinc Clear, Overall Thickness: 0.060 Inch, Bolt Size: 1/8 Inch, ECCN: EAR99, HTS Code: 7318.29.0000, RoHS 3 Compliant: Yes, Shape: Round