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.
Dept. of the Navy 
Thailand 
Italy 
Turkey Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6650-00-238-1199
NSN 5975-01-399-1603
NSN 6685-01-585-6794
NSN 5945-01-654-8032
NSN 5996-01-257-0265
NSN 6145-01-409-1685
NSN 2925-01-359-4027
NSN 6220-00-073-7330
NSN 6130-01-139-7401
NSN 6610-00-186-9180
NSN 5905-01-323-0906
NSN 5960-01-430-3911