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 5950-01-388-2548
NSN 5950-01-411-4992
NSN 6610-00-087-2434
NSN 5855-00-455-6070
NSN 5930-01-519-8896
NSN 6620-00-096-6306
NSN 5996-00-141-0288
NSN 5985-00-420-1260
NSN 4140-01-371-1565
NSN 5950-01-220-5939
NSN 5996-01-376-2156
NSN 5975-01-299-5213