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 5960-01-473-9203
NSN 5999-00-488-9980
NSN 5895-01-359-9997
NSN 5920-01-518-2575
NSN 6610-00-456-0485
NSN 5915-01-610-7341
NSN 5996-01-624-3209
NSN 6135-00-973-5632
NSN 5999-01-596-1671
NSN 5985-00-466-3574
NSN 5996-00-276-5480
NSN 5975-00-170-3623