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 4140-01-152-0634
NSN 5996-01-303-8361
NSN 5935-00-631-5888
NSN 6105-01-201-8257
NSN 5930-01-439-5602
NSN 4140-01-012-2460
NSN 5905-00-602-9780
NSN 5835-01-312-4446
NSN 6110-00-188-3414
NSN 5910-01-562-6861
NSN 5999-01-225-8522
NSN 6645-00-404-1785