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 6650-01-066-0420
NSN 6645-01-631-3451
NSN 5910-01-372-2336
NSN 2925-00-332-1361
NSN 2925-01-415-0264
NSN 5925-01-012-1890
NSN 5975-01-505-7879
NSN 5960-01-462-7704
NSN 6135-01-518-4507
NSN 5960-01-305-5449
NSN 5835-01-324-0089
NSN 6610-00-356-6122