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 5935-01-441-9388
NSN 5920-01-134-9307
NSN 5985-01-480-5685
NSN 5996-00-411-7119
NSN 5895-01-522-3987
NSN 6620-00-232-2048
NSN 5990-00-985-1334
NSN 5998-00-936-7002
NSN 7035-01-313-6973
NSN 5835-00-419-0575
NSN 6685-01-088-4821
NSN 5996-01-206-4104