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 6645-00-679-8203
NSN 5835-01-249-0275
NSN 5990-01-443-2931
NSN 5996-01-181-2697
NSN 5835-01-310-8979
NSN 6240-01-032-5105
NSN 5950-01-382-8141
NSN 2925-01-394-5650
NSN 6610-01-305-8863
NSN 5965-00-285-0745
NSN 7035-01-641-3881
NSN 5855-01-096-9294