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 6110-00-179-5964
NSN 5975-01-490-7034
NSN 6105-00-578-8114
NSN 5915-01-633-9845
NSN 5915-00-238-9432
NSN 6135-01-431-6801
NSN 6650-01-065-2796
NSN 6320-01-311-3286
NSN 5935-00-024-1060
NSN 5950-01-200-4851
NSN 6610-00-689-9457
NSN 5910-01-582-0846