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 7035-01-063-0453
NSN 6110-01-400-4207
NSN 7035-00-104-7613
NSN 6620-01-415-5803
NSN 6610-00-236-7175
NSN 6145-01-192-0738
NSN 6220-00-113-3166
NSN 5996-01-232-0067
NSN 5905-01-244-7537
NSN 6105-01-367-2269
NSN 6220-01-282-7955
NSN 6135-01-370-2599