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 6240-01-240-1596
NSN 5945-00-243-9365
NSN 5935-01-632-3108
NSN 2925-00-066-9700
NSN 6650-01-012-3290
NSN 6135-01-302-4773
NSN 5895-01-486-7862
NSN 5855-00-237-4088
NSN 7035-01-645-4165
NSN 6110-01-025-6139
NSN 6685-01-081-4095
NSN 5895-00-139-6016