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 5945-00-385-3683
NSN 6620-00-553-8988
NSN 5996-01-315-4023
NSN 6110-00-316-3484
NSN 5920-01-218-5742
NSN 5855-01-236-9645
NSN 5920-01-265-1288
NSN 6145-00-155-5297
NSN 2925-01-618-5706
NSN 5910-01-530-6042
NSN 5930-00-689-4815
NSN 5905-00-660-9105