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 6610-00-872-7600
NSN 5945-01-467-4724
NSN 6220-01-245-9242
NSN 6145-01-187-6861
NSN 5998-01-582-8433
NSN 2925-01-166-4589
NSN 5965-00-204-8513
NSN 5835-00-247-0161
NSN 5915-01-217-4716
NSN 5960-01-142-1995
NSN 6145-01-647-4096
NSN 6135-00-145-8884