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 5915-00-217-6517
NSN 5945-00-694-9389
NSN 6110-00-104-6396
NSN 6220-01-509-3798
NSN 6135-01-414-8831
NSN 5975-00-460-4434
NSN 5996-00-783-9246
NSN 5930-01-572-9734
NSN 5935-01-420-5708
NSN 5855-01-484-9948
NSN 6105-01-166-9158
NSN 5895-00-276-7916