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 5965-00-285-0745
NSN 6220-00-050-8485
NSN 5996-01-593-1950
NSN 6685-01-565-4078
NSN 5915-01-146-8951
NSN 6105-01-369-2421
NSN 5945-01-050-9172
NSN 5945-01-061-7659
NSN 5960-01-056-4982
NSN 5930-00-197-5907
NSN 2925-00-833-9466
NSN 6105-00-530-5203