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 5975-01-372-8691
NSN 6620-01-111-3335
NSN 5998-00-513-5680
NSN 6320-01-544-2799
NSN 6645-00-215-0102
NSN 6145-00-683-5353
NSN 5960-01-512-0233
NSN 5945-01-467-1062
NSN 5920-01-522-4408
NSN 5910-01-314-8486
NSN 5950-01-354-7553
NSN 5895-00-723-7258