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 5935-01-268-3057
NSN 5990-01-378-1444
NSN 6220-01-159-5256
NSN 6220-01-043-5561
NSN 6130-01-174-6387
NSN 5950-00-397-9869
NSN 2925-01-123-2235
NSN 6685-01-333-7597
NSN 5950-01-358-9634
NSN 6685-00-604-0770
NSN 5950-00-927-9875
NSN 7035-01-364-8454