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 5960-01-267-4957
NSN 5930-00-301-5854
NSN 5835-00-153-4100
NSN 6135-01-633-8502
NSN 6645-01-257-2856
NSN 5965-01-478-1175
NSN 5895-01-507-9343
NSN 5985-00-946-3867
NSN 5996-01-381-3151
NSN 6145-01-401-3713
NSN 6610-01-027-1641
NSN 6135-00-947-0406