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 5910-01-220-6368
NSN 5915-00-318-8872
NSN 2925-00-532-1481
NSN 6610-01-338-6272
NSN 6645-00-720-3953
NSN 6650-01-229-7500
NSN 6105-01-491-3006
NSN 5930-01-658-0295
NSN 6130-00-470-7825
NSN 6145-00-496-2020
NSN 6220-01-131-5295
NSN 5975-01-245-5929