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 6135-01-573-7164
NSN 6645-01-416-3749
NSN 5835-00-224-9148
NSN 4140-01-338-5087
NSN 6320-01-302-5157
NSN 6135-00-269-5843
NSN 5996-00-891-4036
NSN 5895-01-215-2079
NSN 5905-01-239-0769
NSN 6130-00-019-3032
NSN 5999-01-401-5322
NSN 5950-01-658-5757