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 5960-01-381-2478
NSN 5996-01-440-8935
NSN 5975-01-152-1266
NSN 5990-00-734-7285
NSN 5990-01-476-9956
NSN 2925-01-448-2880
NSN 5965-00-652-5661
NSN 5835-00-368-4182
NSN 6105-00-010-9647
NSN 5965-01-448-6055
NSN 5965-00-590-7995
NSN 5998-00-151-6813