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 6685-00-475-9589
NSN 5960-01-477-9997
NSN 5945-01-431-8124
NSN 5960-00-796-1664
NSN 4140-01-492-8416
NSN 5960-01-460-0115
NSN 5910-00-733-8021
NSN 5996-00-560-0931
NSN 5915-00-820-8511
NSN 6650-01-517-1588
NSN 5960-01-553-4557
NSN 5895-01-342-6585