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 6240-00-226-5970
NSN 6105-01-500-0891
NSN 5855-00-151-3853
NSN 6685-01-505-3853
NSN 6105-00-915-6601
NSN 5915-01-063-1336
NSN 6135-01-415-1163
NSN 6240-01-211-2179
NSN 5905-01-374-6352
NSN 6685-01-318-0628
NSN 5975-01-640-7368
NSN 5950-00-206-3213