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 6135-00-240-3200
NSN 5915-01-495-5882
NSN 6610-00-411-7246
NSN 6220-01-481-2603
NSN 5935-01-621-7663
NSN 6620-01-387-7645
NSN 5935-00-599-5685
NSN 6145-00-677-0140
NSN 6645-01-244-0285
NSN 5835-01-599-1876
NSN 5930-01-082-7914
NSN 5965-01-310-0634