The washer is a simple spring washer that is used in applications where a plain nut or bolt is used, such as the lower fork cap bolts.
The washer is a simple spring washer used to prevent a nut from loosening off due to vibration. The 3/8″ inside diameter is meant for use with a 5/16″ stud or bolt.
The washer is used under the head of a bolt or nut to keep the fastener in place after tightening.
