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 5895-00-889-3963
NSN 7035-01-325-0536
NSN 5895-01-181-6781
NSN 6110-00-269-2696
NSN 5905-01-144-6880
NSN 5910-01-391-5009
NSN 5920-01-585-8112
NSN 5998-01-513-9898
NSN 6135-01-380-4396
NSN 5855-00-089-3974
NSN 6105-01-111-7986
NSN 6320-01-211-6578