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 5930-00-580-1665
NSN 5915-01-536-3585
NSN 5910-00-233-6639
NSN 5996-01-421-4417
NSN 6105-01-252-8847
NSN 5999-01-226-5310
NSN 6650-01-201-6623
NSN 6320-01-406-6098
NSN 5999-00-862-3437
NSN 6685-01-440-8749
NSN 6110-01-421-9980
NSN 6320-01-326-1316