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 5950-01-285-4629
NSN 5950-01-222-0808
NSN 2925-01-510-2221
NSN 5950-01-310-7713
NSN 7035-01-556-2554
NSN 5965-01-147-5655
NSN 6130-01-432-0986
NSN 5855-00-797-8217
NSN 7035-01-089-4485
NSN 6105-00-246-5311
NSN 6130-01-043-8253
NSN 5835-01-161-7461