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 5996-00-520-4370
NSN 5965-00-144-2543
NSN 6220-01-536-0591
NSN 6135-01-156-4627
NSN 5925-01-651-2042
NSN 5985-01-241-0412
NSN 5930-01-344-9701
NSN 5999-01-065-1646
NSN 6105-00-235-7982
NSN 7035-01-083-0282
NSN 5990-01-357-6175
NSN 6320-01-585-8468