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 2925-01-142-0981
NSN 6150-01-357-6223
NSN 5996-01-426-8531
NSN 5920-01-152-1949
NSN 5925-00-584-7189
NSN 7035-01-562-7857
NSN 5990-00-234-0119
NSN 5965-00-673-9843
NSN 5915-01-069-3616
NSN 5935-01-235-5104
NSN 2925-01-423-8141
NSN 6110-00-255-2025