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 5999-01-315-0979
NSN 5855-01-085-5354
NSN 6685-00-709-1695
NSN 6130-00-061-7486
NSN 5975-01-168-6191
NSN 5905-00-190-0137
NSN 5945-00-173-4980
NSN 5996-00-277-7384
NSN 5975-01-016-9493
NSN 5925-00-958-4332
NSN 6620-01-316-5487
NSN 5835-01-502-9228