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 6645-00-557-0322
NSN 5915-01-520-8322
NSN 6645-01-643-7151
NSN 7035-01-391-9858
NSN 5999-00-467-9305
NSN 7035-00-009-8705
NSN 5835-01-336-0462
NSN 5950-01-569-9200
NSN 5835-00-126-2961
NSN 6320-01-113-7647
NSN 6105-00-834-0169
NSN 6145-00-358-6700