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 6130-00-674-2059
NSN 5975-00-684-6725
NSN 5895-01-193-1070
NSN 6650-01-353-2281
NSN 5835-01-257-0154
NSN 6220-01-606-8226
NSN 5930-01-063-4782
NSN 5999-01-209-6508
NSN 5910-00-731-1795
NSN 2925-01-619-4825
NSN 6110-00-553-8816
NSN 6145-01-401-3713