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 5999-00-222-1150
NSN 2925-01-370-6898
NSN 6240-01-470-4272
NSN 5985-01-355-5122
NSN 6135-01-433-2062
NSN 6110-01-335-6174
NSN 5855-00-610-4052
NSN 5835-01-067-7770
NSN 5985-00-484-0882
NSN 5999-01-603-1711
NSN 6110-01-014-7568
NSN 6610-00-979-4011