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 5975-01-383-7008
NSN 6130-01-366-2284
NSN 5965-01-058-9785
NSN 6240-00-050-4522
NSN 5990-00-087-6177
NSN 6105-00-257-2505
NSN 7035-01-107-2811
NSN 6320-01-426-8947
NSN 6110-00-248-7475
NSN 5999-00-141-7682
NSN 5996-00-902-0202
NSN 6685-00-812-1160