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 5925-01-364-2960
NSN 5910-01-018-8934
NSN 6135-01-100-3593
NSN 5990-01-218-5160
NSN 6620-01-467-2111
NSN 5950-01-406-4603
NSN 4140-01-308-3932
NSN 6610-01-648-4460
NSN 5960-00-372-4876
NSN 5985-00-419-4028
NSN 6650-01-503-4469
NSN 6650-01-145-5173