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 6130-01-434-3095
NSN 6105-00-842-0552
NSN 5910-01-144-3106
NSN 5920-00-837-2633
NSN 5965-00-189-9394
NSN 6610-01-350-7697
NSN 5998-01-412-0553
NSN 6685-01-079-8278
NSN 6150-01-268-3144
NSN 5855-01-007-9541
NSN 5945-00-196-4772
NSN 5996-01-650-5762