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 6610-01-167-8747
NSN 5998-01-093-5473
NSN 6320-01-088-1109
NSN 5910-01-552-6266
NSN 5925-01-304-5343
NSN 6105-01-206-6434
NSN 5975-01-507-8668
NSN 6150-00-249-0071
NSN 5925-01-099-4702
NSN 5920-01-407-1091
NSN 5920-01-442-3395
NSN 6110-01-535-3758