Six sides; every corner is curved; aperture has a keyway on each end along the length, 0.255 in. Radius
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.
Classification: Other articles of iron or steel not wire nesoi
NSN 6645-00-527-6531
NSN 6610-01-632-8561
NSN 5985-00-049-9158
NSN 5935-00-919-5915
NSN 5965-01-107-8549
NSN 5920-00-147-7975
NSN 6240-00-290-4185
NSN 4140-01-111-2486
NSN 4140-01-392-0495
NSN 5945-01-145-3179
NSN 6135-01-059-4055
NSN 7035-00-834-2090