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 5930-00-844-8470
NSN 6620-00-292-7000
NSN 5975-01-591-5969
NSN 6645-01-202-7986
NSN 6105-01-391-5285
NSN 6650-01-406-9852
NSN 5905-00-157-5708
NSN 5996-01-206-0434
NSN 5835-00-284-0882
NSN 5960-00-468-5353
NSN 6110-01-244-7816
NSN 6320-01-631-7828