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 6220-01-018-2049
NSN 5905-01-535-7040
NSN 6220-01-415-5698
NSN 5960-01-019-0017
NSN 6610-01-608-5285
NSN 6610-01-593-0135
NSN 7035-00-117-0418
NSN 5996-01-391-0681
NSN 6110-01-445-5273
NSN 6240-01-237-1481
NSN 5990-01-147-5225
NSN 5950-01-529-1578