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 6620-01-323-7620
NSN 6320-01-129-9656
NSN 5999-01-466-8117
NSN 5975-00-266-2029
NSN 5998-01-276-6228
NSN 6610-00-788-8628
NSN 2925-01-517-4037
NSN 5910-01-597-3469
NSN 5960-01-518-4440
NSN 6240-00-705-7731
NSN 5920-00-038-0011
NSN 6620-01-124-0947