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 5945-00-530-3798
NSN 5920-00-271-3217
NSN 5985-01-655-3971
NSN 5945-01-204-3507
NSN 6620-01-155-6564
NSN 5999-01-545-0071
NSN 5835-01-063-3484
NSN 5930-01-391-2080
NSN 6105-01-621-8677
NSN 5950-00-584-4571
NSN 6320-01-017-5274
NSN 5950-00-460-0833