Webbelleville washer steel springs are characterized by a long fatigue life, better space utilization, low creep tendency, and high force bearing. Webthe general explanation of bellevillewashers on loosening resistance is that the stored strain energy can counteract the relaxation in the bolt.
Websome of them could honestly belong to any haunted place, given that they center on ghostly whispers, frightening dreams, and touches administered by unseen.