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 6145-01-518-0574
NSN 5855-00-908-9314
NSN 6135-00-985-7887
NSN 6135-01-518-9813
NSN 5910-01-361-4674
NSN 6150-01-595-7669
NSN 5950-00-209-9832
NSN 5945-00-272-5536
NSN 5945-00-857-3061
NSN 5965-00-097-9654
NSN 5960-01-067-3156
NSN 5925-01-492-8354