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 5999-00-231-4632
NSN 5999-01-394-8363
NSN 5985-01-573-6029
NSN 5835-01-528-7454
NSN 6220-01-062-2077
NSN 6145-00-008-1834
NSN 5930-00-246-5215
NSN 5965-01-335-4304
NSN 5985-00-903-3239
NSN 5960-00-840-3656
NSN 5895-01-341-0435
NSN 5950-00-408-1628