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 6220-01-524-0285
NSN 5950-00-453-2219
NSN 5945-01-473-0434
NSN 5985-01-431-8029
NSN 4140-00-836-6319
NSN 5935-01-573-0163
NSN 5930-01-634-0659
NSN 5935-01-185-6100
NSN 5920-01-122-6303
NSN 6145-01-448-0832
NSN 6145-00-111-3902
NSN 5960-00-814-7845