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 5930-01-454-7752
NSN 6685-01-202-6592
NSN 5945-01-003-8106
NSN 6320-00-636-0922
NSN 5950-00-285-6419
NSN 5920-01-328-7159
NSN 5895-00-473-9673
NSN 6620-00-350-3434
NSN 5915-00-364-3650
NSN 6685-00-858-0763
NSN 4140-01-649-2473
NSN 7035-01-629-5792