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 5945-01-445-6883
NSN 5985-00-910-4697
NSN 5925-01-249-9066
NSN 5945-01-379-1227
NSN 6650-01-226-0720
NSN 6650-01-378-7875
NSN 6610-01-295-3104
NSN 5915-01-393-0348
NSN 7035-01-469-5854
NSN 5975-01-608-7590
NSN 6320-01-450-7083
NSN 5910-01-444-4096