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 6105-00-950-6978
NSN 6110-01-393-6992
NSN 6650-00-256-9059
NSN 5920-01-486-3826
NSN 5975-00-245-6811
NSN 6105-01-161-5024
NSN 5910-01-249-5616
NSN 5895-01-461-2972
NSN 6610-00-126-3021
NSN 6130-01-239-4913
NSN 5990-00-869-8352
NSN 6110-01-433-2694