Aligning key on inside diameter
A flat metal or plastic item of various peripheral shapes having a solid (not laminated) cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole having a solid rectangular cross-section use disk, solid, plain. For round or hexagonal items with only one hole centrally located and with the length (thickness) exceeding 25 percent of the outside diameter or distance across peripheral flats, see spacer, sleeve. The thickness between the two parallel bearing surfaces must be 0.006 inch, (0.152 mm) or more for items less than 1/4 inch (6.35 mm) across the peripheral diameter, or smallest overall outside dimension, or must be 0.016 inch (0.406 mm) or more for items 1/4 inch (6.35 mm) or greater across the peripheral diameter or smallest overall outside dimension. For items with a thickness less than those indicated above, see shim. For items with one hole centrally located conforming to the above dimensional criteria use washer, flat or spacer, ring as applicable. When thickness and/or outside diameter or smallest overall outside dimension is designated as a tolerance/dimension the maximum dimension will be used to determine compliance. Excludes gasket; insulator (as modified) and mounting pad, electrical-electronic component.
Dept. of the Army 
Dept. of the Air Force 
Dept. of the Navy 
Kuwait 
France 
Portugal 
Greece Classification: Other articles of iron or steel not wire nesoi
NSN 6645-00-155-2398
NSN 5965-00-482-7945
NSN 7035-01-468-6532
NSN 6620-00-992-5876
NSN 2925-00-078-0525
NSN 5935-01-547-5007
NSN 6220-01-314-5439
NSN 5990-01-272-4091
NSN 5930-01-605-0162
NSN 5855-00-198-3197
NSN 5945-01-436-4635
NSN 6130-01-631-8460