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 6135-01-186-4010
NSN 7035-00-104-7613
NSN 5855-01-412-5147
NSN 6110-00-260-0130
NSN 5965-01-447-9754
NSN 6610-01-627-0642
NSN 5920-01-514-8762
NSN 6150-01-526-6760
NSN 5985-01-184-8449
NSN 6620-00-199-8734
NSN 6130-00-127-0685
NSN 6105-01-423-8242