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 6240-01-571-3684
NSN 5975-00-734-4606
NSN 5895-01-599-8439
NSN 7035-01-151-0265
NSN 5975-01-207-9281
NSN 5985-01-481-7330
NSN 5895-00-006-2884
NSN 6135-00-008-5345
NSN 5999-00-036-8454
NSN 5920-00-140-8912
NSN 5960-00-597-2680
NSN 6145-01-431-8803