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 6650-00-757-7962
NSN 6240-01-608-4401
NSN 5996-01-250-3912
NSN 5960-01-522-0391
NSN 6130-01-246-2264
NSN 6240-00-172-8451
NSN 5835-01-014-4574
NSN 5915-01-106-3944
NSN 6110-01-550-2113
NSN 6110-00-412-8198
NSN 5930-01-319-3038
NSN 5915-00-847-7890