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 6220-01-381-1074
NSN 6150-01-099-2467
NSN 6220-00-019-7545
NSN 6645-01-521-3180
NSN 6320-01-331-6947
NSN 2925-01-442-7812
NSN 5965-01-030-7253
NSN 5925-01-471-5111
NSN 6145-01-015-1330
NSN 6145-01-412-8809
NSN 5996-00-265-7067
NSN 5975-01-453-6543