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 7035-01-492-6799
NSN 6320-01-096-6649
NSN 6320-00-371-8335
NSN 6130-01-305-0463
NSN 5975-00-799-2584
NSN 5965-01-455-7385
NSN 5835-01-272-4087
NSN 5905-01-362-5901
NSN 5950-01-062-2156
NSN 6145-00-101-9857
NSN 6320-00-295-2854
NSN 5950-01-200-4500