Square nut; heavy
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 6645-00-558-0028
NSN 4140-00-657-4964
NSN 5960-01-260-7430
NSN 6105-01-287-5133
NSN 6320-01-512-2031
NSN 2925-01-422-1542
NSN 5975-01-581-2354
NSN 6620-01-323-6091
NSN 6650-01-648-3903
NSN 5895-00-635-3727
NSN 6135-00-613-1068
NSN 6620-01-116-3983