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 5930-01-003-0784
NSN 6620-00-244-0965
NSN 5915-01-173-5864
NSN 5950-01-300-9015
NSN 5950-01-036-8937
NSN 5925-00-252-1554
NSN 5990-01-206-8895
NSN
NSN 5990-01-448-2751
NSN 5990-00-631-9480
NSN 6150-00-284-2976
NSN 6320-01-371-3047