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 5915-00-895-0527
NSN 5930-01-418-5372
NSN 5855-00-821-7512
NSN 5855-01-160-3802
NSN 5920-01-041-9168
NSN 5965-01-161-8097
NSN 5895-00-256-6212
NSN 5930-00-608-5722
NSN 2925-01-549-8053
NSN 6145-00-060-2818
NSN 5920-01-614-1381
NSN 5945-01-320-8144