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 2925-01-330-2988
NSN 5945-00-415-8284
NSN 5905-00-207-3946
NSN 6620-01-642-4218
NSN 5930-01-230-2251
NSN 6150-01-323-9441
NSN 5915-00-934-3446
NSN 5996-01-212-9866
NSN 6130-00-913-4114
NSN 5996-01-592-2414
NSN 5925-01-570-2734
NSN 6135-01-648-4875