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 6220-00-066-9599
NSN 5960-00-258-9292
NSN 6685-01-142-0595
NSN 5920-01-579-2153
NSN 5996-01-286-2375
NSN 5998-01-030-2490
NSN 5935-00-279-6952
NSN 5998-01-296-2785
NSN 5960-00-955-0012
NSN 6620-01-633-8443
NSN 5945-01-595-9695
NSN 5925-01-513-9924