A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 5945-01-231-3232
NSN 5950-00-333-9739
NSN 6650-00-503-8275
NSN 5996-01-273-1972
NSN 6105-00-008-6140
NSN 5925-01-280-5451
NSN 5930-01-312-2396
NSN 5895-00-389-7400
NSN 5930-00-194-9139
NSN 6110-01-648-5878
NSN 5920-01-283-7042
NSN 5930-01-552-4295