A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5999-00-227-7409
NSN 5985-00-452-2228
NSN 6620-01-307-3468
NSN 6650-00-537-9222
NSN 6650-01-010-0107
NSN 5975-00-117-5630
NSN 5915-00-786-1571
NSN 5910-00-274-3189
NSN 6685-01-603-0844
NSN 5835-01-291-5405
NSN 6130-00-975-1095
NSN 5935-01-377-4311