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 5905-01-393-1471
NSN 5950-00-688-6569
NSN 5985-00-977-5938
NSN 5950-01-580-0598
NSN 6240-01-158-9299
NSN 5835-01-254-5279
NSN 5895-00-581-5650
NSN 5998-01-265-9371
NSN 5985-01-474-5141
NSN 5910-00-164-2069
NSN 7035-01-337-8128
NSN 5920-01-386-5798