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 5975-01-360-5583
NSN 6240-01-433-9410
NSN 6320-00-823-2015
NSN 5835-01-113-8731
NSN 6320-00-468-8421
NSN 5999-01-457-7056
NSN 6610-01-606-0966
NSN 5990-00-419-0236
NSN 6150-00-221-5122
NSN 5985-01-603-5553
NSN 5935-01-375-5125
NSN 5945-01-426-5316