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 6240-01-418-2606
NSN 6240-00-050-4522
NSN 5985-00-703-0999
NSN 4140-00-189-0235
NSN 5975-01-478-5339
NSN 6135-00-377-9165
NSN 2925-01-481-7170
NSN 6135-01-650-6529
NSN 5985-01-544-4816
NSN 6105-01-595-9044
NSN 5999-01-435-4607
NSN 5950-01-027-0695