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 5999-01-025-5223
NSN 6150-00-596-9882
NSN 5895-01-568-5755
NSN 6650-00-172-7519
NSN 7035-00-238-3662
NSN 6240-00-836-4980
NSN 6610-00-081-2365
NSN 6620-01-064-0366
NSN 6320-01-497-3116
NSN 6135-01-071-4923
NSN 5935-01-563-5946
NSN 6685-01-399-1701