The item is a flight safety critical aircraft part (fscap)
A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.
Classification: Nuts of iron or steel
NSN 7035-01-593-8058
NSN 5920-00-839-8096
NSN 5920-00-081-5958
NSN 6220-01-060-9823
NSN 6645-01-480-7646
NSN 6220-00-951-0878
NSN 6135-01-238-2878
NSN 6320-01-262-8642
NSN 5855-00-147-2508
NSN 6685-01-596-5654
NSN 5835-01-447-2544
NSN 5920-01-634-0250