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 5990-00-782-1400
NSN 6150-01-479-9748
NSN 6320-01-416-7993
NSN 6320-00-194-4252
NSN 5950-01-278-4176
NSN 6105-01-025-7922
NSN 5935-00-285-2767
NSN 2925-01-326-0908
NSN 5975-01-137-0206
NSN 5960-01-106-9300
NSN 6685-01-515-6452
NSN 5996-01-046-6351