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 5910-01-574-7359
NSN 5950-01-500-2223
NSN 6650-00-573-7131
NSN 5996-01-422-3087
NSN 5975-01-647-1636
NSN
NSN 5985-00-524-6786
NSN 7035-01-027-2259
NSN 6610-00-925-0935
NSN 6650-01-577-7010
NSN 5965-00-249-6980
NSN 5915-00-661-2223