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 5905-00-058-9340
NSN 6610-01-232-4802
NSN 5915-01-005-5126
NSN 6240-00-428-4027
NSN 5998-00-338-0313
NSN 5855-01-298-6659
NSN 6150-00-756-3184
NSN 2925-01-399-2765
NSN 5990-00-983-1813
NSN 5960-01-551-7034
NSN 5975-01-532-8862
NSN 6130-01-094-4348