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 5945-00-498-5850
NSN 5960-01-460-0115
NSN 6110-01-590-2904
NSN 5910-00-067-5682
NSN 5945-00-204-9949
NSN 6685-01-292-7874
NSN 6105-00-692-4468
NSN 5855-01-328-7434
NSN 5999-00-185-6032
NSN 5930-01-504-0185
NSN 6240-00-784-4214
NSN 5965-00-436-2226