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 5935-00-111-1333
NSN 6220-01-573-8784
NSN 5910-01-401-5279
NSN 5975-00-265-7774
NSN 6650-00-425-7028
NSN 5895-01-070-1557
NSN 5910-01-043-8066
NSN 5895-01-422-7315
NSN 5998-00-245-6671
NSN 5945-01-372-0595
NSN 5960-01-439-3731
NSN 5965-01-181-5706