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 6105-00-251-2618
NSN 5835-01-466-5496
NSN 5835-00-063-0390
NSN 6145-00-343-5967
NSN 5950-01-331-3922
NSN 6645-01-093-5015
NSN 5920-00-661-0840
NSN 5999-00-925-2502
NSN 5999-00-338-1965
NSN 5945-01-570-7341
NSN 4140-01-048-3340
NSN 7035-01-246-3086