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 6650-00-187-5388
NSN 6150-01-055-6670
NSN 6220-00-631-1734
NSN 6685-01-487-5624
NSN 6150-01-623-3609
NSN 5920-01-374-9244
NSN 5996-00-428-8130
NSN 5998-01-104-5293
NSN 4140-01-265-0731
NSN 6150-01-301-2342
NSN 6145-00-366-5790
NSN 5915-00-181-9223