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 6645-00-711-5381
NSN 6240-01-030-1183
NSN 5998-00-189-0761
NSN 5905-00-248-6461
NSN 5910-01-202-1769
NSN 5915-01-438-1550
NSN 5915-00-269-4463
NSN 5935-00-499-9070
NSN 6105-01-144-2055
NSN 5999-01-303-6569
NSN 6685-01-143-7722
NSN 6220-01-210-1906