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 5998-01-051-0462
NSN 5935-00-370-0040
NSN 6320-01-415-0953
NSN 5895-01-500-3402
NSN 5855-01-366-2429
NSN 5855-01-286-9928
NSN 6135-01-196-7399
NSN 5996-01-551-5714
NSN 5915-00-920-4346
NSN 5996-00-811-6063
NSN 5920-01-123-8148
NSN 5945-00-652-2829