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 5960-00-279-3536
NSN 6220-00-282-7916
NSN 6620-00-635-7347
NSN 5930-01-562-0907
NSN 6650-00-122-9452
NSN 6240-01-659-6363
NSN 6105-00-932-3627
NSN 5975-01-124-2406
NSN 6110-01-026-8181
NSN 6105-01-205-6212
NSN 5915-00-927-6877
NSN 5930-00-223-8646