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 6145-01-483-1292
NSN 6620-01-606-4138
NSN 6220-01-352-5425
NSN 5998-01-370-4384
NSN 6105-00-079-0044
NSN 5895-00-458-4383
NSN 6620-01-614-3591
NSN 5945-01-026-1231
NSN 5985-00-740-7154
NSN 2925-01-043-9786
NSN 5835-00-969-5771
NSN 6650-01-268-9702