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 6135-01-375-6724
NSN 6145-01-451-6144
NSN 5960-01-229-6324
NSN 6150-01-166-1064
NSN 5965-01-519-8758
NSN 5915-00-733-9189
NSN 6105-00-142-5901
NSN 6110-01-332-1665
NSN 5975-01-391-7803
NSN 6135-01-036-3495
NSN 6110-00-951-9824
NSN 6105-01-126-6438