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 6220-01-381-1793
NSN 5960-01-050-6440
NSN 5835-00-419-0575
NSN 5925-01-557-9007
NSN 2925-00-441-8252
NSN 5998-01-377-5002
NSN 6135-01-305-6958
NSN 6650-00-936-7910
NSN 5975-00-518-4977
NSN 6610-01-266-3447
NSN 6130-01-607-1049
NSN 6105-01-423-0136