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 5905-00-430-2923
NSN 5985-00-405-7619
NSN 5996-01-009-0428
NSN 7035-00-465-3298
NSN 6220-01-430-4268
NSN 6240-01-609-6665
NSN 5990-00-933-0526
NSN 6685-00-432-8795
NSN 5990-01-581-5103
NSN 5915-01-367-7420
NSN 6220-01-023-3179
NSN 6240-01-534-1271