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 5895-00-625-5424
NSN 5920-01-018-7259
NSN 5895-01-384-2794
NSN 6620-01-483-1138
NSN 6145-00-003-4184
NSN 5998-00-063-8081
NSN 5935-00-256-8826
NSN 6130-01-138-5230
NSN 5999-01-567-4610
NSN 5999-01-237-2920
NSN 5895-00-501-8174
NSN 7035-01-168-3596