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 5925-00-439-4025
NSN 6150-01-415-3573
NSN 6650-00-169-1866
NSN 6320-01-383-3257
NSN 5945-01-611-0126
NSN 5910-00-207-8860
NSN 6610-00-176-5486
NSN 6105-00-248-5772
NSN 5965-00-841-9195
NSN 4140-00-099-9205
NSN 5999-01-096-5168
NSN 7035-01-615-7707