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 5915-00-468-3911
NSN 5915-01-248-1165
NSN 5925-01-649-9042
NSN 6145-00-879-0312
NSN 5950-01-292-3426
NSN 5910-01-415-5758
NSN 6620-01-033-6637
NSN 5915-01-019-5206
NSN 5855-01-418-0089
NSN 5855-00-316-5050
NSN 5998-01-547-5709
NSN 6645-00-864-6794