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 6320-01-125-3361
NSN 5975-00-269-4365
NSN 5895-01-204-8433
NSN 5990-00-001-4570
NSN 6610-01-043-4043
NSN 5925-01-496-5172
NSN 5935-01-125-2683
NSN 6220-01-624-7803
NSN 6110-01-177-7027
NSN 6240-01-123-0968
NSN 4140-01-472-8433
NSN 2925-00-398-0253