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 6130-01-350-2132
NSN 5999-01-506-8311
NSN 5975-01-600-7943
NSN 5999-01-566-7202
NSN 6620-01-132-7281
NSN 5945-01-438-6424
NSN 5950-01-549-1457
NSN 5950-00-852-9615
NSN 6685-00-424-7557
NSN 6620-01-642-6107
NSN 5905-00-827-4521
NSN 6650-01-212-1618