Marson, AS-9, Back-Up Washers (Marson), Unit of Measure: Inch, 0.160 Inch Inner Diameter, 0.437 Inch Outer Diameter, Material: Aluminum, Finish: Plain, Overall Thickness: 0.060 Inch, Bolt Size: 5/32 Inch, ECCN: EAR99, HTS Code: 7616.99.5095, RoHS 3 Compliant: Yes, Shape: Round