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 5998-01-313-4844
NSN 5990-01-199-4832
NSN 5996-01-451-6815
NSN 5925-00-816-6658
NSN 5935-01-200-7035
NSN 6610-01-418-5787
NSN 5975-01-563-5999
NSN 2925-01-004-1683
NSN 5855-01-383-6558
NSN 5910-00-100-5784
NSN 5925-01-213-6398
NSN 6650-00-617-7573