Do not dupe to nsn 5310-00-903-5966; this nsn is for pearl harbor use only; this is a non-standard unit-of-issue
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6620-00-064-3598
NSN 5915-01-445-5067
NSN 5895-01-317-3986
NSN 6150-00-856-3789
NSN 6240-00-067-1021
NSN 2925-00-839-6815
NSN 5910-01-592-1459
NSN 5835-01-342-2654
NSN 6135-00-519-1325
NSN 5999-00-755-6708
NSN 6130-01-428-7355
NSN 5996-01-169-2278