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 5920-01-546-0705
NSN 6135-00-990-1822
NSN 5930-01-383-5941
NSN 6620-01-157-9267
NSN 5855-01-288-2271
NSN 6685-00-436-7635
NSN 6145-00-609-2879
NSN 5905-01-338-9420
NSN 5996-00-484-9196
NSN 6685-00-488-6912
NSN 5999-01-039-1372
NSN 5910-00-502-5865