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 6105-01-282-2800
NSN 6645-01-202-7986
NSN 5935-01-552-9431
NSN 5925-00-894-2398
NSN 5999-00-602-8566
NSN 5975-00-493-3614
NSN 6620-00-781-9617
NSN 5915-01-525-4083
NSN 6135-00-539-8088
NSN 7035-01-522-5208
NSN 6320-01-622-5493
NSN 5905-00-073-3836