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 5920-01-132-9395
NSN 5935-00-225-1619
NSN 6645-00-596-5388
NSN 5910-01-583-2403
NSN 6145-00-448-1636
NSN 5985-01-287-1647
NSN 6150-00-312-2164
NSN 6110-00-071-2783
NSN 5996-01-614-6669
NSN 5915-00-079-1011
NSN 5910-01-426-2043
NSN 6135-01-589-9467