0.250 size
No other part numbers with same form, fit, and function found.
A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces
NSN 5998-01-509-6328
NSN 5985-00-518-1748
NSN 5945-00-003-2489
NSN 5996-01-346-1099
NSN 5996-00-237-5146
NSN 6110-00-901-0861
NSN 6240-00-045-9844
NSN 5975-00-768-0306
NSN 5920-00-425-2878
NSN 5895-00-056-1512
NSN 5960-01-449-5726
NSN 6220-00-494-4437