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 5998-01-189-3093
NSN 5998-01-430-2161
NSN 6240-01-187-6536
NSN 5985-00-502-8712
NSN 7035-01-167-2241
NSN 6135-01-408-9244
NSN 7035-01-611-2610
NSN 5895-00-056-1512
NSN 6135-01-391-6515
NSN 5965-01-241-0553
NSN 5965-01-272-3480
NSN 5925-01-487-8190