A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 5920-00-066-6885
NSN 5910-01-403-2812
NSN 5950-01-005-0111
NSN 5935-01-442-7834
NSN 6320-00-238-9973
NSN 5935-01-193-1918
NSN 6130-01-024-9557
NSN 5895-01-239-4955
NSN 5960-01-273-4201
NSN 6220-00-243-6526
NSN 6650-01-625-8688
NSN 6650-01-067-0132