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 6135-01-010-0891
NSN 6150-01-064-6397
NSN 6110-00-316-3484
NSN 5930-01-286-8270
NSN 5910-00-726-9114
NSN 5910-01-391-5609
NSN 6240-00-938-1512
NSN 6110-01-491-6704
NSN 6320-01-276-4739
NSN 5935-01-269-9551
NSN 5910-01-023-8230
NSN 5930-01-174-2617