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 5915-01-078-0325
NSN 4140-01-252-8902
NSN 6320-00-242-3300
NSN 7035-01-642-1639
NSN 5950-01-169-8231
NSN 6320-00-994-0179
NSN 5930-00-938-9427
NSN 6135-01-295-7523
NSN 7035-01-549-3616
NSN 5996-00-159-1056
NSN 5915-00-290-1569
NSN 5985-01-084-0852