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 5895-00-203-2379
NSN 6320-01-029-4220
NSN 5920-01-254-9978
NSN 6150-01-311-5556
NSN 5998-00-564-5813
NSN 6645-01-062-0905
NSN 5985-00-541-7714
NSN 6145-01-501-6548
NSN 6610-01-581-5012
NSN 5905-00-474-6508
NSN 5945-01-352-7178
NSN 6685-01-043-1818