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 6645-00-353-6659
NSN 5835-01-384-3206
NSN 5930-01-217-3124
NSN 2925-01-146-0278
NSN 5960-01-468-6508
NSN 5905-00-201-8133
NSN 5985-01-101-3954
NSN 5905-01-478-9026
NSN 5835-00-632-8621
NSN 6145-00-104-7789
NSN 5835-01-324-5670
NSN 5930-01-413-6373