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 5950-00-433-4378
NSN 5999-00-460-4477
NSN 5998-01-044-2035
NSN 5998-00-683-1333
NSN 5855-00-198-3197
NSN 6620-01-543-5491
NSN 2925-01-091-4734
NSN 5996-01-511-2138
NSN 6240-01-068-8828
NSN 5895-01-512-3684
NSN 6650-01-139-0022
NSN 5965-01-640-8044