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 6145-01-160-7658
NSN 5960-00-420-0418
NSN 5930-01-218-6480
NSN 6105-01-027-0099
NSN 5985-00-059-5915
NSN 2925-01-193-6689
NSN 5930-00-492-5859
NSN 6150-01-273-9357
NSN 4140-00-061-3110
NSN 5915-01-371-2906
NSN 5960-01-360-3639
NSN 5975-01-218-7186