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 5905-01-130-8975
NSN 5990-01-107-1003
NSN 6105-01-533-0407
NSN 6320-01-144-3810
NSN 4140-01-468-0476
NSN 6685-01-024-5339
NSN 5999-01-281-8193
NSN 6645-01-257-2856
NSN 5998-01-394-5249
NSN 5915-01-145-2148
NSN 5855-01-534-3063
NSN 5999-01-032-8377