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 6645-00-462-4842
NSN 6130-01-281-7519
NSN 5920-01-154-3612
NSN 6110-00-409-1115
NSN 5925-01-212-1492
NSN 6220-01-614-0563
NSN 2925-00-707-6770
NSN 5905-00-835-2453
NSN 6150-01-086-4198
NSN 5925-00-162-2799
NSN 6320-00-546-9249
NSN 5996-01-586-9111