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 2925-01-448-2880
NSN 7035-01-350-4247
NSN 6145-01-104-6029
NSN 7035-01-565-7679
NSN 5910-00-077-2836
NSN 5998-01-484-9006
NSN 2925-01-244-3016
NSN 5998-01-498-5296
NSN 5930-01-141-6901
NSN 6620-01-607-3362
NSN 5930-01-644-7325
NSN 6650-01-137-7450