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 6650-00-287-5868
NSN 6650-01-393-4152
NSN 6320-01-478-9351
NSN 6650-01-338-9998
NSN 5990-01-599-4721
NSN 6610-00-409-4993
NSN 5965-01-164-0561
NSN 5930-01-502-7898
NSN 7035-00-483-8630
NSN 6610-01-608-0170
NSN 5960-01-041-3048
NSN 5910-01-105-6657