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 5998-01-351-2584
NSN 5999-00-874-6867
NSN 6105-01-466-4936
NSN 6145-01-239-7067
NSN 6240-01-160-4248
NSN 6650-01-469-2400
NSN 5905-00-126-4697
NSN 6320-00-701-0437
NSN 5910-01-659-5094
NSN 5960-01-020-6316
NSN 5990-01-416-1017
NSN 5925-00-286-8502