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 5945-01-631-1692
NSN 5975-01-599-4808
NSN 6220-00-062-7029
NSN 5996-00-269-2655
NSN 6610-00-040-4124
NSN 6650-01-423-3767
NSN 5930-00-186-0712
NSN 5910-01-217-9076
NSN 6130-00-329-4514
NSN 5950-00-589-6292
NSN 6110-01-431-4257
NSN 6150-01-335-5496