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 6145-01-195-8824
NSN 5895-01-440-8522
NSN 6220-01-534-6695
NSN 6320-00-070-4544
NSN 5965-01-088-5414
NSN 5965-01-611-6085
NSN 6220-01-572-1896
NSN 5915-01-130-4965
NSN 2925-01-602-1975
NSN 6645-01-422-5686
NSN 5998-00-233-7425
NSN 6610-00-631-8303