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 5996-01-089-0514
NSN 6320-01-512-2031
NSN 5996-01-215-0944
NSN 5996-00-543-0913
NSN 6145-01-241-0965
NSN 5960-00-039-8533
NSN 5985-01-427-3734
NSN 5990-00-234-9136
NSN 5999-01-328-6585
NSN 6645-01-230-8025
NSN 5950-01-551-3675
NSN 5855-00-631-4565