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 6610-01-061-8466
NSN 5920-00-336-9055
NSN 6240-01-330-2058
NSN 5835-01-095-4400
NSN 4140-00-710-4549
NSN 4140-01-658-9085
NSN 5965-01-022-3298
NSN 6645-01-422-8078
NSN 5965-00-377-0301
NSN 5905-00-248-7443
NSN 6135-01-351-2690
NSN 5960-01-197-4461