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 5945-01-288-3143
NSN 5835-00-752-6065
NSN 2925-01-424-0235
NSN 6135-01-142-6456
NSN 5930-00-509-1480
NSN 6240-01-447-0069
NSN 5835-01-501-0526
NSN 6240-01-280-5347
NSN 5945-01-249-9606
NSN 5915-01-410-7822
NSN 6620-00-140-8644
NSN 6645-01-311-3324