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 5975-01-231-9306
NSN 6145-01-132-6600
NSN 7035-00-179-3924
NSN 6105-00-352-9481
NSN 6240-01-166-1807
NSN 6240-01-579-3109
NSN 5835-01-216-1215
NSN 5975-00-191-2884
NSN 6220-01-196-5969
NSN 5990-01-351-4621
NSN 5835-01-384-3206
NSN 6320-00-242-3300