Bolt size unc 8 5/16 inch and metric
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
Classification: Spring washers and other lock washers, iron or steel
NSN 6105-01-165-6923
NSN 5895-01-139-1988
NSN 5965-01-582-6935
NSN 5990-01-311-4762
NSN 5985-01-151-0030
NSN 5965-01-223-3307
NSN 6610-00-261-8159
NSN 5910-00-203-2119
NSN 5975-00-217-7177
NSN 6650-00-486-7924
NSN 5930-01-396-4182
NSN 5945-01-264-3179