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 5895-01-438-3714
NSN 6130-01-458-9257
NSN 5998-01-067-9359
NSN 5910-00-269-4755
NSN 5920-00-030-5712
NSN 5950-01-409-9232
NSN 6135-00-027-3914
NSN 5960-00-728-5209
NSN 5960-00-289-6591
NSN 5910-01-445-1690
NSN 6610-01-642-1752
NSN 6620-00-392-9835