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 6110-00-596-9124
NSN 6685-00-596-8765
NSN 5925-00-883-4441
NSN 6320-01-185-3857
NSN 6320-01-118-6662
NSN 6145-01-420-7620
NSN 4140-01-630-0236
NSN 6145-01-327-2674
NSN 6150-00-276-7483
NSN 6645-00-503-1379
NSN 5996-01-343-7024
NSN 5965-00-878-6652