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 7035-00-167-7411
NSN 5925-01-137-3752
NSN 7035-01-227-2546
NSN 6610-01-424-0776
NSN 5998-00-914-2368
NSN 5945-01-328-0717
NSN 5905-00-233-6650
NSN 6650-01-559-2934
NSN 5925-00-112-3460
NSN 5930-00-840-5804
NSN 5915-01-012-2964
NSN 5920-00-425-2878