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 5975-00-962-2199
NSN 6650-01-329-3055
NSN 6240-01-063-6070
NSN 6320-01-244-9268
NSN 5996-01-647-1714
NSN 6620-00-849-9940
NSN 2925-01-244-3016
NSN 5910-01-435-6053
NSN 5960-01-525-1690
NSN 5996-01-434-9060
NSN 5965-00-116-5363
NSN 5910-00-948-6461