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 6620-01-232-0680
NSN 6110-01-173-7506
NSN 6620-01-550-8573
NSN 5915-01-043-9673
NSN 6145-01-284-1487
NSN 5996-01-330-7842
NSN 5999-00-590-0544
NSN 6240-01-045-9269
NSN 5925-00-290-4451
NSN 6685-01-298-9207
NSN 5985-00-927-1815
NSN 5990-00-079-0932