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 6105-00-451-6563
NSN 5965-01-285-2133
NSN 6105-00-281-8185
NSN 4140-01-022-8613
NSN 6135-01-349-6285
NSN 5950-01-146-4329
NSN 6645-01-579-6304
NSN 5950-00-206-3213
NSN 5960-00-357-3043
NSN 6240-01-142-0729
NSN 5999-01-460-4541
NSN 5990-00-135-6180