Six sides; every corner is curved; aperture has a keyway on each end along the length, 0.255 in. Radius
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.
Classification: Other articles of iron or steel not wire nesoi
NSN 6150-00-505-3969
NSN 5965-00-465-9566
NSN 6645-00-891-1531
NSN 5910-01-363-9123
NSN 6220-01-468-6030
NSN 6620-01-401-5356
NSN 5905-00-144-4910
NSN 6110-01-166-7220
NSN 5915-00-823-8334
NSN 5985-01-391-9329
NSN 6110-00-163-2848
NSN 5905-01-263-1852