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 6610-01-373-3626
NSN 2925-01-601-5050
NSN 5905-00-187-3506
NSN 5960-00-133-2475
NSN 5990-00-059-3449
NSN 5855-01-610-9321
NSN 6105-01-573-3499
NSN 5975-01-204-7916
NSN 5905-01-628-4520
NSN 5895-00-395-2657
NSN 6150-01-398-0065
NSN 5920-00-259-7294