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 6110-01-586-8963
NSN 6130-01-144-7137
NSN 2925-01-442-7812
NSN 5855-01-517-7325
NSN 5990-00-399-9241
NSN 6145-01-383-4630
NSN 6105-01-312-7430
NSN 5975-01-364-8662
NSN 6610-01-100-3662
NSN 5855-01-564-2044
NSN 6650-00-059-6268
NSN 7035-01-145-5059