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 5910-01-445-6903
NSN 5975-01-123-6525
NSN 5960-00-121-9926
NSN 5996-00-072-9944
NSN 6240-01-406-5345
NSN 6685-01-364-9782
NSN 6220-01-274-0724
NSN 5999-01-219-5472
NSN 6320-01-449-1014
NSN 5925-01-549-9760
NSN 5998-01-503-8643
NSN 2925-00-853-5039