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 5920-00-960-0386
NSN 5998-00-754-0663
NSN 5895-01-247-8998
NSN 5935-00-222-6752
NSN 5990-01-264-9759
NSN 6320-00-336-9123
NSN 6240-00-280-0186
NSN 5925-00-434-9101
NSN 6130-01-186-6575
NSN 6685-01-580-2461
NSN 5905-01-158-3707
NSN 6650-01-412-1040