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 5950-01-500-1369
NSN 4140-01-104-7508
NSN 6320-00-459-8973
NSN 5910-01-457-4800
NSN 6650-01-391-7527
NSN 5975-01-634-0678
NSN 5905-01-037-9438
NSN 7035-01-592-2562
NSN 5998-01-044-2702
NSN 6685-00-237-4138
NSN 5975-01-147-9196
NSN 5905-00-776-4643