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 6130-01-259-7115
NSN 5895-01-033-2611
NSN 6685-00-504-1911
NSN 5835-01-580-0446
NSN 5950-01-005-0111
NSN 6620-01-266-8894
NSN 5835-00-113-6090
NSN 5990-01-503-9804
NSN 7035-01-027-2582
NSN 6110-01-356-9857
NSN 5998-01-503-0665
NSN 4140-01-386-9821