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 5925-00-913-9784
NSN 5998-00-169-7948
NSN 5920-01-198-3602
NSN 6685-00-175-9382
NSN 5905-01-147-5708
NSN 6135-01-434-4161
NSN 5960-00-847-6840
NSN 4140-01-158-4139
NSN 6110-00-964-3514
NSN 5915-00-825-0453
NSN 4140-01-085-7810
NSN 7035-00-179-3924