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 5996-00-156-5967
NSN 6130-00-410-8496
NSN 5910-01-326-8364
NSN 6130-00-938-6900
NSN 5965-01-222-1420
NSN 6610-00-912-5039
NSN 5915-01-510-8578
NSN 5996-01-544-1467
NSN 6150-01-468-0296
NSN 5905-00-338-9621
NSN 5960-00-099-9790
NSN 4140-00-246-4969