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 5855-00-327-2061
NSN 5975-01-492-8362
NSN 5985-00-145-7786
NSN 5998-00-645-7671
NSN 5925-01-406-3490
NSN 5905-00-419-2966
NSN 6105-01-482-0415
NSN 5915-01-552-3324
NSN 6110-01-420-7849
NSN 5935-01-519-9349
NSN 6240-01-538-5525
NSN 6220-01-212-3254