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 5975-01-620-7109
NSN 5905-01-315-8094
NSN 5905-01-573-7437
NSN 5915-01-321-8951
NSN 6610-00-400-1252
NSN 5925-01-586-9827
NSN 6105-01-056-7511
NSN 5960-01-236-3884
NSN 6320-01-050-1290
NSN 7035-00-908-4933
NSN 2925-01-116-6838
NSN 5945-00-240-2623