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 5925-01-290-4754
NSN 5945-01-391-1041
NSN 6220-01-222-0724
NSN 6620-01-325-4220
NSN 6650-01-008-0724
NSN 5930-01-653-5469
NSN 5925-00-350-4478
NSN 6685-00-342-0740
NSN 6610-00-703-9553
NSN 6130-01-583-7477
NSN 6620-00-226-2285
NSN 5960-00-435-8335