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 5998-01-461-7621
NSN 5999-01-337-1214
NSN 6220-01-166-4909
NSN 5925-01-216-0287
NSN 7035-00-108-4421
NSN 5996-00-222-6049
NSN 5965-01-420-6613
NSN 6240-01-558-4104
NSN 6320-01-106-4414
NSN 6610-01-005-1190
NSN 5920-00-694-0483
NSN 5930-00-477-0747