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 6145-00-814-8128
NSN 5996-00-288-1829
NSN 5985-01-618-6313
NSN 5935-01-336-6950
NSN 5996-01-182-1125
NSN 5985-01-298-6863
NSN 6150-00-978-7338
NSN 6105-01-511-0383
NSN 5925-00-269-2685
NSN 6320-01-261-2848
NSN 6645-01-442-4032
NSN 5935-01-617-1349