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 6645-01-025-1002
NSN 5965-00-822-8549
NSN 6650-00-929-3946
NSN 6610-01-499-0776
NSN 6685-01-332-7822
NSN 5998-01-508-8196
NSN 5999-00-153-0917
NSN 5960-01-487-6436
NSN 6220-01-237-6776
NSN 6105-01-186-0364
NSN 6620-01-597-7200
NSN 6220-01-242-6702