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 5998-01-419-1843
NSN 5925-01-362-5494
NSN 5960-00-026-3142
NSN 5985-01-033-7498
NSN 5999-01-427-3702
NSN 6110-00-371-2458
NSN 5996-01-613-1207
NSN 6685-01-218-3043
NSN 4140-00-007-5726
NSN 5996-01-432-9724
NSN 5935-00-389-7160
NSN 7035-01-512-2453