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 5990-01-364-8405
NSN 5935-01-659-2699
NSN 5930-00-884-9840
NSN 5910-01-085-6434
NSN 5835-00-021-2521
NSN 7035-01-649-8977
NSN 6320-01-516-3836
NSN 5905-01-471-4622
NSN 4140-00-640-6811
NSN 5910-00-162-7378
NSN 5930-01-465-6075
NSN 5835-00-313-7197