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 5945-01-620-8969
NSN 5905-01-350-5637
NSN 6320-00-149-7570
NSN 5910-01-370-4823
NSN 5895-01-561-9495
NSN 5960-01-628-2760
NSN 6645-01-189-6942
NSN 2925-01-163-6716
NSN 5920-01-391-7624
NSN 5945-01-457-3464
NSN 5915-01-386-4402
NSN 5950-01-330-4056