A piece of metal , felt , fiber or other material usually annular and basically flat used under a bolt or rivet head under a nut or other fastener to distribute pressure , produce predetermined pressure or space. Includes parts with a thickness greater than 0.77 MM and equal to or less than 9.53 MM.


![[CT1065-092] Arbor Screw for WEN CT1065](https://www.bestsolidhardwaredepot.com/wp-content/uploads/2026/10/ct1065-092-arbor-screw-wen-ct1065.webp)





