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 5895-00-633-7623
NSN 5950-00-823-4784
NSN 5950-01-227-4244
NSN 5990-01-254-3197
NSN 5945-00-155-4290
NSN 5999-01-383-8427
NSN 6145-01-440-9225
NSN 5930-00-450-8164
NSN 6130-01-152-3629
NSN 5996-01-407-3777
NSN 5835-00-233-6327
NSN 5975-00-411-1689