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 5965-01-418-4380
NSN 5855-01-519-4991
NSN 6610-01-455-4977
NSN 6620-00-413-4695
NSN 5835-01-606-3086
NSN 6220-01-138-1622
NSN 6610-01-539-0014
NSN 5965-01-087-2987
NSN 5998-01-503-8190
NSN 6150-01-041-4581
NSN 5990-01-417-4402
NSN 6650-00-197-7563