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 5915-01-444-4069
NSN 5945-00-679-7733
NSN 6135-01-300-8455
NSN 5996-00-925-1953
NSN 6620-00-943-8020
NSN 5905-01-335-0156
NSN 5985-01-578-2216
NSN 5990-01-493-4039
NSN 6130-01-055-6846
NSN 5925-00-959-4983
NSN 5925-01-212-7249
NSN 6610-01-093-4710