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 5895-00-356-0179
NSN 6145-00-375-5224
NSN 5935-00-896-0770
NSN 2925-01-218-5556
NSN 5920-00-341-6340
NSN 6110-01-438-4368
NSN 5975-01-101-1141
NSN 5998-00-365-2001
NSN 6130-00-679-7752
NSN 5835-01-519-3834
NSN 4140-01-447-3141
NSN 5950-00-473-3274