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 5999-00-506-2317
NSN 6130-00-110-5194
NSN 5985-01-466-6341
NSN 6110-00-539-9543
NSN 5945-01-634-0588
NSN 6110-00-372-4780
NSN 6135-01-377-3862
NSN 6645-00-925-3857
NSN 2925-01-360-3575
NSN 5950-01-128-4555
NSN 5905-00-857-5607
NSN 6150-00-398-6527