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 5920-01-442-4937
NSN 5999-00-432-0765
NSN 5999-00-058-5475
NSN 5835-01-449-7511
NSN 5925-00-494-9565
NSN 5910-01-462-0401
NSN 7035-00-117-0418
NSN 5920-01-221-0510
NSN 5965-00-639-6621
NSN 5975-01-452-6655
NSN 6320-01-399-6177
NSN 5950-00-230-1176