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 6610-00-886-3652
NSN 6110-01-261-1560
NSN 6620-00-216-6416
NSN 2925-01-359-4027
NSN 5835-00-847-7277
NSN 6610-01-416-8384
NSN 6220-00-927-0543
NSN 2925-01-389-1683
NSN 5910-00-280-1463
NSN 5920-01-556-4299
NSN 2925-01-043-9786
NSN 5975-01-276-5206