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 5999-01-425-8440
NSN 6105-01-509-1402
NSN 5905-01-383-7537
NSN 6145-01-606-1849
NSN 5930-01-369-9394
NSN 6105-00-915-8331
NSN 5925-01-497-3259
NSN 5996-01-343-2962
NSN 5915-01-570-5625
NSN 7035-00-079-7189
NSN 2925-01-500-0730
NSN 4140-01-244-9518