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 5835-01-553-4894
NSN 5965-01-568-9236
NSN 5935-01-281-0065
NSN 6320-01-033-6624
NSN 7035-00-371-7749
NSN 5990-01-459-9533
NSN 6150-00-222-5302
NSN 6150-01-141-4998
NSN 5935-01-143-8649
NSN 6135-00-947-0406
NSN 2925-00-707-6770
NSN 5950-01-626-9348