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 5975-00-115-5046
NSN 5985-01-227-2646
NSN 5990-00-753-8870
NSN 2925-01-595-4345
NSN 6110-00-244-8542
NSN 5925-00-488-8030
NSN 7035-01-355-7284
NSN 5905-01-040-7417
NSN 5855-00-879-5849
NSN 5855-01-573-4289
NSN 6610-01-140-5921
NSN 5990-01-168-6797