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 6135-00-728-9860
NSN 6320-01-275-3972
NSN 5935-01-406-4329
NSN 6685-01-527-7338
NSN 5935-01-423-1324
NSN 6685-01-429-8922
NSN 5960-00-854-7171
NSN 6620-01-617-1885
NSN 2925-00-198-8547
NSN 6645-00-106-0140
NSN 6610-01-391-5092
NSN 5930-01-491-3421