Flats slots inupper portion 0.200 in w by 0.380 in deep
A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
Classification: Nuts of iron or steel
NSN 6110-01-242-1617
NSN 6650-01-486-3964
NSN 6650-01-629-4863
NSN 4140-01-410-8615
NSN 5960-00-863-6035
NSN 6650-01-273-3152
NSN 6145-01-546-0137
NSN 7035-00-250-0982
NSN 6110-00-931-2085
NSN 5895-00-519-3042
NSN 5920-00-027-4320
NSN 5975-01-297-0497