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.
Dept. of the Navy 
Thailand 
Italy 
Turkey Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5960-01-586-5235
NSN 5950-01-286-8276
NSN 6645-00-998-7820
NSN 6320-00-036-3688
NSN 6150-00-426-1969
NSN 5930-01-496-0254
NSN 5910-01-212-3090
NSN 7035-01-364-0286
NSN 5910-01-261-8989
NSN 5998-01-424-7136
NSN 5855-00-401-3442
NSN 6150-01-056-4345