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 6220-01-506-5349
NSN 5965-00-799-5490
NSN 5975-00-474-9769
NSN 5990-00-195-9460
NSN 5975-01-525-8529
NSN 5990-00-274-3225
NSN 5975-01-461-8549
NSN 5895-00-800-3224
NSN 5998-01-274-8602
NSN 6650-01-519-9165
NSN 5950-01-154-4770
NSN 5996-01-538-4658