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 7035-01-598-5676
NSN 5920-00-836-9866
NSN 5996-00-028-6802
NSN 5835-00-896-9597
NSN 5895-01-064-1001
NSN 5998-01-628-6231
NSN 6105-01-363-4726
NSN 7035-00-238-3662
NSN 5950-01-546-0895
NSN 5960-01-045-5823
NSN 5920-01-312-4452
NSN 5930-01-451-6795