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 5960-00-410-3500
NSN 6105-00-011-3671
NSN 6685-01-401-5360
NSN 5935-01-592-3178
NSN 6105-00-530-0656
NSN 5835-01-394-3812
NSN 6645-01-535-7136
NSN 5895-00-402-7936
NSN 5950-01-445-5586
NSN 6320-01-278-2359
NSN 6110-00-551-8321
NSN 6130-01-134-9311