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 7035-00-369-6346
NSN 6145-01-536-4535
NSN 6620-00-527-9280
NSN 5910-01-589-2490
NSN 6135-00-733-9665
NSN 5960-01-212-8118
NSN 5930-01-601-4443
NSN 6110-00-399-1413
NSN 6620-01-129-1260
NSN 6135-01-360-1620
NSN 6130-01-475-1996
NSN 5835-01-408-7576