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 5925-01-634-0664
NSN 6135-00-921-6487
NSN 5895-01-428-7802
NSN 5895-00-866-7789
NSN 5915-01-212-1546
NSN 5965-01-253-8699
NSN 5835-00-196-9771
NSN 6110-01-062-0252
NSN 7035-00-616-4410
NSN 6620-01-085-8688
NSN 5910-00-689-6860
NSN 6645-01-658-5624