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 6135-01-265-1384
NSN 5855-01-541-1361
NSN 5925-01-411-7839
NSN 5895-01-381-6574
NSN 6610-01-471-5599
NSN 5999-01-413-8843
NSN 6610-00-205-7352
NSN 5920-01-310-6027
NSN 5975-01-181-2607
NSN 6610-01-371-5039
NSN 5925-01-390-2150
NSN 4140-00-733-7936