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 5960-00-539-6350
NSN 6145-01-112-2573
NSN 6105-01-100-5534
NSN 2925-01-553-3546
NSN 6610-01-275-0119
NSN 5855-01-057-2200
NSN 5895-00-681-9874
NSN 6130-00-135-4919
NSN 6110-01-357-2011
NSN 5975-01-530-0776
NSN 6240-01-246-3248
NSN 6645-00-139-9239