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 5999-01-066-5010
NSN 6135-00-539-8088
NSN 5895-01-433-2447
NSN 5935-01-524-6595
NSN 2925-01-446-6523
NSN 6645-01-552-0004
NSN 5910-01-552-8064
NSN 6240-01-205-0005
NSN 5960-00-241-2911
NSN 5996-00-207-6086
NSN 5990-00-288-1820
NSN 6610-00-999-1528