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 5945-01-035-3521
NSN 6650-01-428-2251
NSN 4140-00-375-6021
NSN 4140-01-619-6101
NSN 5915-01-242-5002
NSN 5950-00-225-6802
NSN 6130-01-268-1703
NSN 6105-01-313-1129
NSN 5996-01-024-9976
NSN 5975-01-144-7176
NSN 5985-01-439-3869
NSN 5975-01-654-1230