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 5996-00-679-1274
NSN 5935-01-281-5341
NSN 6610-01-398-8815
NSN 5960-00-170-6916
NSN 5925-00-473-0481
NSN 5910-01-145-5454
NSN 5915-01-655-7824
NSN 5950-00-241-6943
NSN 6130-01-377-0370
NSN 6645-01-468-1777
NSN 5930-01-325-5611
NSN 5910-01-564-1714