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 7035-00-043-1325
NSN 6645-00-876-4413
NSN 5990-00-984-3661
NSN 5925-01-551-3498
NSN 5935-01-524-5950
NSN 5996-01-049-5452
NSN 5925-01-393-2573
NSN 5835-01-442-6079
NSN 5930-01-658-7031
NSN 6110-00-338-9015
NSN 6320-01-397-0399
NSN 6610-01-447-2560