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 5999-01-554-6252
NSN 6135-00-777-5562
NSN 5920-00-081-5958
NSN 6610-01-135-2149
NSN 5920-01-632-9399
NSN 6240-01-187-7758
NSN 5895-01-150-8694
NSN 6220-01-573-6204
NSN 6645-01-230-5073
NSN 6685-00-386-9003
NSN 6150-00-801-2580
NSN 5950-01-272-9689