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 5990-00-454-6250
NSN 5930-01-588-4077
NSN 5990-00-949-8451
NSN 7035-00-703-3535
NSN 5895-00-761-5557
NSN 5950-01-271-4819
NSN 7035-01-085-5955
NSN 6610-01-289-2848
NSN 6135-00-477-8847
NSN 6150-00-876-1686
NSN 6645-01-495-0939
NSN 5925-01-243-4235