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 6685-00-290-0212
NSN 2925-01-226-6126
NSN 5965-00-096-7370
NSN 5965-01-565-6415
NSN 2925-01-387-0870
NSN 5915-01-585-4204
NSN 5965-01-215-0993
NSN 6110-01-435-1714
NSN 5999-00-717-5130
NSN 6685-00-733-7377
NSN 5835-01-229-6964
NSN 5895-01-486-1093