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 5998-01-272-5776
NSN 2925-00-247-6248
NSN 5905-01-634-0595
NSN 6650-01-137-3278
NSN 2925-00-644-0028
NSN 5920-01-350-3115
NSN 5895-01-352-0878
NSN 5975-00-971-4897
NSN 5985-01-085-4408
NSN 7035-00-631-3782
NSN 5996-01-378-8532
NSN 6620-00-930-5680