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 5935-01-508-3468
NSN 6645-01-027-7042
NSN 6620-01-348-8256
NSN 5930-01-100-1003
NSN 5930-01-190-5523
NSN 5905-01-561-0480
NSN 6610-01-042-2279
NSN 6130-01-245-3785
NSN 5950-01-140-3165
NSN 5910-01-363-4572
NSN 5945-01-459-4374
NSN 6240-01-319-3699