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 5910-00-781-6902
NSN 6135-01-512-8105
NSN 6130-00-633-6187
NSN 5915-01-486-0698
NSN 7035-01-578-6784
NSN 5996-01-530-7313
NSN 5999-00-973-4483
NSN 5985-01-125-8332
NSN 5930-00-160-4880
NSN 6150-00-271-0520
NSN 5915-01-014-7877
NSN 6220-00-967-0062