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 5920-01-384-2034
NSN 5996-01-415-1028
NSN 6220-00-433-9337
NSN 2925-01-122-8881
NSN 2925-01-283-3576
NSN 6130-01-109-9870
NSN 6620-01-102-0008
NSN 6105-01-568-0763
NSN 6240-01-343-0065
NSN 6610-01-360-3564
NSN 5905-00-539-5956
NSN 6130-00-581-9322