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 5915-01-316-0429
NSN 2925-01-341-9400
NSN 5999-00-510-2615
NSN 5915-00-597-2369
NSN 5905-01-228-1715
NSN 5910-01-591-3751
NSN 5965-01-082-9288
NSN 5985-01-337-9198
NSN 5910-01-483-5718
NSN 4140-01-517-9148
NSN 5996-01-237-4501
NSN 5910-00-929-7849