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 6110-01-384-3125
NSN 5965-01-423-5159
NSN 6130-00-496-0549
NSN 6150-01-441-9359
NSN 5925-01-126-8188
NSN 5925-00-100-0102
NSN 5915-00-189-1067
NSN 5935-01-594-6101
NSN 5985-00-277-7371
NSN 6320-00-270-8222
NSN 6240-00-959-7025
NSN 5965-00-263-1226