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 5910-01-335-2018
NSN 2925-01-161-7440
NSN 5910-01-200-9202
NSN 5935-01-115-7382
NSN 7035-01-384-9257
NSN 6105-00-707-5962
NSN 5905-00-462-2821
NSN 5950-01-146-4045
NSN 5965-01-476-0721
NSN 5905-01-386-4241
NSN 6650-00-690-8709
NSN 6685-01-357-8856