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 5950-01-418-0266
NSN 5999-01-478-6605
NSN 6685-01-251-8938
NSN 6240-01-181-4474
NSN 6620-01-535-1230
NSN 5999-00-824-2106
NSN 6240-00-383-7668
NSN 6645-01-400-1137
NSN 6110-00-288-4179
NSN 6220-01-106-3215
NSN 6135-00-078-9931
NSN 5990-01-370-7912