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 5960-01-300-3506
NSN 5965-01-545-4770
NSN 7035-00-088-7355
NSN 5895-01-384-3230
NSN 5950-01-155-2448
NSN 6320-00-284-1524
NSN 6610-00-287-6884
NSN 5990-00-629-2794
NSN 5935-01-536-4205
NSN 5915-01-651-3006
NSN 6130-01-387-6988
NSN 5925-00-337-8138