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 6130-00-826-8284
NSN 5965-00-387-6880
NSN 5915-00-653-9457
NSN 5950-01-464-4196
NSN 5925-01-450-9228
NSN 5905-00-824-9227
NSN 5910-01-042-8857
NSN 6620-01-621-0719
NSN 5905-01-384-6011
NSN 5998-00-557-2832
NSN 5915-00-495-0788
NSN 5910-00-904-6735