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 5965-01-357-7595
NSN 5915-01-229-0167
NSN 5990-01-474-3477
NSN 6620-01-483-1138
NSN 6110-01-350-0912
NSN 5996-00-213-7121
NSN 5960-01-507-9112
NSN 5950-00-759-6785
NSN 6110-00-269-2696
NSN 5915-01-502-7335
NSN 6240-01-400-4212
NSN 5915-01-492-6600