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 5998-01-117-9643
NSN 5960-01-628-2760
NSN 6135-01-236-8603
NSN 5945-01-397-7255
NSN 6150-01-358-3407
NSN 6645-00-133-7823
NSN 6110-01-281-5492
NSN 6610-01-159-0438
NSN 2925-01-350-8372
NSN 5935-01-344-7652
NSN 6135-00-276-7625
NSN 5905-01-160-7110