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 5945-01-236-8808
NSN 5935-00-050-5396
NSN 5965-01-448-9585
NSN 6685-00-497-3577
NSN 5996-01-604-9653
NSN 5975-00-229-9593
NSN 5835-01-460-0582
NSN 6645-00-062-7606
NSN 6610-00-398-9673
NSN 5930-01-428-4258
NSN 6620-01-539-8945
NSN 6685-01-521-7002