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 5920-01-199-0083
NSN 5999-00-706-2980
NSN 6320-01-608-1935
NSN 6240-00-488-0278
NSN 5895-01-308-0007
NSN 5975-00-430-1220
NSN 6645-00-426-3719
NSN 7035-00-931-9415
NSN 5855-00-014-5008
NSN 6620-00-553-8988
NSN 5915-01-357-7585
NSN 6130-01-620-8526