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 6650-01-549-0105
NSN 6610-01-207-0045
NSN 6135-00-284-1406
NSN 5975-00-486-0577
NSN 6135-01-277-7907
NSN 5935-00-131-8834
NSN 6645-01-504-3394
NSN 5920-00-998-5958
NSN 5930-01-260-4121
NSN 5990-01-312-2638
NSN 6130-00-549-2607
NSN 5920-01-020-0059