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 6135-01-514-0356
NSN 6145-00-803-2100
NSN 6145-01-259-4530
NSN 5835-01-547-9631
NSN 5996-00-392-7626
NSN 6320-01-275-2741
NSN 6610-00-352-7004
NSN 6650-00-273-8732
NSN 6645-00-344-7558
NSN 6610-00-999-1528
NSN 5905-00-583-7981
NSN 5910-00-110-1052