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 5910-00-126-4756
NSN 5996-00-336-3046
NSN 2925-01-228-6554
NSN 5935-01-461-7936
NSN 5996-01-350-8392
NSN 6645-01-157-9080
NSN 5915-01-204-1406
NSN 6620-01-391-7331
NSN 5835-01-302-2745
NSN 5930-00-952-9031
NSN 6610-01-476-7412
NSN 5990-01-468-1292