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 5910-00-835-1941
NSN 7035-01-372-3361
NSN 6650-00-369-4429
NSN 5985-01-410-7826
NSN 5945-00-339-2755
NSN 5998-01-303-6218
NSN 6645-00-296-8310
NSN 5935-01-569-1274
NSN 5925-01-553-8498
NSN 5996-01-120-6407
NSN 5985-01-421-2527
NSN 5990-01-412-9020