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 6135-01-502-0018
NSN 5965-00-532-3284
NSN 6220-01-391-4492
NSN 6145-01-490-3828
NSN 5895-01-433-1623
NSN 5990-00-689-5736
NSN 6145-01-332-7463
NSN 5965-00-228-8336
NSN 5855-01-600-4130
NSN 5925-01-348-4223
NSN 5910-01-296-8690
NSN 6105-01-624-5068