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 6650-01-460-9111
NSN 5999-00-973-3468
NSN 5945-01-347-4196
NSN 6320-01-170-4068
NSN 6620-01-602-5999
NSN 5925-00-425-6032
NSN 5985-01-190-0773
NSN 6110-01-611-4687
NSN 5915-01-293-1069
NSN 6135-00-919-1117
NSN 5965-00-161-3954
NSN 6145-01-267-9341