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 6645-00-155-2398
NSN 6135-00-276-7625
NSN 5920-01-062-8731
NSN 6130-01-191-5856
NSN 7035-00-470-4977
NSN 6620-01-237-0254
NSN 5965-01-388-3492
NSN 5905-00-194-0551
NSN 2925-01-448-1277
NSN 5996-00-009-9343
NSN 4140-00-270-4457
NSN 5975-01-228-9092