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 6220-01-230-0872
NSN 5975-00-179-4708
NSN 6135-01-377-5729
NSN 5945-00-973-4144
NSN 2925-01-032-3814
NSN 6685-00-616-7950
NSN 6110-01-324-6316
NSN 6620-00-278-7313
NSN 5965-01-026-9865
NSN 5996-00-287-5059
NSN 4140-00-823-9194
NSN 5910-00-201-7551