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 5945-01-019-4905
NSN 6110-01-513-3814
NSN 5999-01-277-0816
NSN 6320-01-198-4024
NSN 7035-01-554-5540
NSN 6685-00-928-7639
NSN 6110-00-838-0492
NSN 5935-01-171-6768
NSN 5998-01-077-8603
NSN 5895-01-293-4725
NSN 6150-01-283-9002
NSN 5996-00-004-4643