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 5996-01-413-2901
NSN 5935-01-464-4230
NSN 6645-01-193-9839
NSN 5895-00-828-1846
NSN 6610-01-646-1609
NSN 5965-01-647-0204
NSN 6145-01-104-6029
NSN 5996-01-396-8829
NSN 5895-01-048-5131
NSN 5915-01-432-0324
NSN 6110-01-270-3388
NSN 5895-00-418-4639