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 6130-01-343-7031
NSN 5930-01-075-2167
NSN 6220-00-342-1086
NSN 5996-01-302-8776
NSN 5998-00-862-0019
NSN 5910-01-587-1303
NSN 2925-00-833-9466
NSN 5999-01-337-2051
NSN 6610-00-225-9886
NSN 6320-01-532-7491
NSN 5910-01-640-9109
NSN 5985-01-335-0388