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 5935-00-255-0964
NSN 5985-01-560-0900
NSN 6105-00-915-8331
NSN 5998-00-701-9143
NSN 6320-00-831-2227
NSN 6150-01-420-6811
NSN 6220-01-018-2049
NSN 5985-01-583-7835
NSN 5999-01-394-6348
NSN 5960-01-476-5686
NSN 6620-00-170-5296
NSN 6685-01-621-6622