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 5920-00-713-4242
NSN 5960-01-117-6577
NSN 5915-00-868-4377
NSN 6645-00-509-9008
NSN 6220-00-181-4643
NSN 5905-00-816-9028
NSN 6620-00-526-4296
NSN 6610-01-372-5608
NSN 5925-01-293-0896
NSN 5990-01-432-0523
NSN 5950-01-510-6186
NSN 5855-01-519-7929