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 5999-00-235-0214
NSN 2925-01-425-7087
NSN 4140-01-534-1589
NSN 5950-01-190-8109
NSN 5965-01-425-5857
NSN 6645-00-067-7070
NSN 5915-00-191-5894
NSN 6220-01-164-3651
NSN 6645-01-489-5426
NSN 6145-01-202-3539
NSN 6220-00-727-3288
NSN 5835-01-406-4066