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 5965-01-550-7313
NSN 5910-01-068-4198
NSN 7035-01-524-0493
NSN 5998-00-560-7971
NSN 6135-01-222-0703
NSN 7035-01-391-9858
NSN 5935-01-243-1672
NSN 6240-01-419-1010
NSN 6145-01-448-3910
NSN 5905-01-076-3145
NSN 5998-01-605-1157
NSN 5895-00-859-5251