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 5835-00-909-8088
NSN 6645-00-351-8580
NSN 6220-01-614-0811
NSN 5905-01-244-9426
NSN 6130-00-276-0658
NSN 5920-00-146-5071
NSN 5935-01-654-8557
NSN 5895-01-390-8294
NSN 6620-00-358-7160
NSN 6645-01-376-2336
NSN 5910-01-237-2621
NSN 5996-01-444-2602