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 5998-01-534-3330
NSN 6150-01-619-3349
NSN 5895-01-566-2541
NSN 5975-01-075-9423
NSN 5965-01-378-7335
NSN 5960-01-413-3877
NSN 6320-01-250-0290
NSN 5925-01-145-5330
NSN 5950-00-248-6921
NSN 6145-00-615-2019
NSN 5925-00-252-5930
NSN 5905-01-424-0798