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 2925-00-992-7904
NSN 5895-01-385-1045
NSN 6145-00-062-7897
NSN 5925-01-025-7008
NSN 6220-01-359-3993
NSN 5935-00-161-3429
NSN 5915-01-453-9949
NSN 5996-01-422-8103
NSN 5945-00-472-1432
NSN 6145-01-646-6272
NSN 6685-00-723-8814
NSN 5998-00-979-9600