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 6610-00-186-9180
NSN 5915-01-069-4010
NSN 5975-00-459-8902
NSN 6220-01-542-0580
NSN 6685-00-327-6401
NSN 5950-01-174-8999
NSN 5835-00-891-2232
NSN 6320-01-525-4789
NSN 5960-00-368-4084
NSN 2925-01-301-9339
NSN 5925-00-772-8168
NSN 5960-01-423-2511