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 5965-01-495-0316
NSN 2925-01-338-1687
NSN 6145-01-550-9633
NSN 5925-01-350-3646
NSN 6135-01-455-2233
NSN 5855-01-057-7818
NSN 2925-00-233-5644
NSN 5835-01-528-7454
NSN 5915-00-617-9477
NSN 4140-00-861-5399
NSN 5996-01-545-4152
NSN 5835-01-027-0597