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 5835-01-240-5022
NSN 5990-01-123-4226
NSN 5935-01-392-2289
NSN 5999-01-343-6513
NSN 6130-01-607-6305
NSN 5910-01-013-4555
NSN 5930-01-392-7948
NSN 5990-00-082-3107
NSN 5905-01-046-9626
NSN 5895-01-423-3186
NSN 6320-00-228-5678
NSN 2925-01-341-0457