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 5998-01-429-0325
NSN 7035-01-448-4740
NSN 6105-01-266-4428
NSN 6610-01-354-7963
NSN 5990-01-040-6358
NSN 6145-01-154-0989
NSN 6645-00-171-9639
NSN 6130-01-182-6456
NSN 5905-01-347-0230
NSN 4140-01-256-7680
NSN 6150-00-407-1386
NSN 6620-01-135-7846