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 5965-01-254-3622
NSN 5915-01-539-7634
NSN 5998-00-208-0093
NSN 6145-00-699-8963
NSN 7035-01-088-6415
NSN 6135-01-595-4779
NSN 6135-00-377-9165
NSN 5985-01-140-3735
NSN 5895-01-415-7088
NSN 5935-01-467-9950
NSN 6645-01-180-6219
NSN 2925-01-408-9485