A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. for items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. when thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.
Dept. of the Navy 
Greece Classification: Other articles of iron or steel not wire nesoi
NSN 5998-00-158-3192
NSN 5950-01-342-6936
NSN 5985-01-419-1199
NSN 6610-01-153-8625
NSN 5915-00-701-8296
NSN 6220-01-537-1680
NSN 7035-01-457-5645
NSN 5835-01-470-2157
NSN 6320-01-067-0474
NSN 5999-01-459-7848
NSN 2925-01-532-0781
NSN 6150-01-459-8026