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 6150-01-072-8362
NSN 6240-01-025-0355
NSN 5920-00-117-8280
NSN 5905-01-551-8937
NSN 5945-01-283-9575
NSN 6135-01-108-2864
NSN 5999-01-095-4859
NSN 5930-01-539-5323
NSN 5996-01-212-9866
NSN 5975-00-433-5983
NSN 6130-01-084-6922
NSN 5950-01-102-9176