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 5925-00-274-3195
NSN 7035-01-594-9198
NSN 5985-01-255-8077
NSN 5895-00-525-3295
NSN 6645-01-160-4256
NSN 6685-01-348-8254
NSN 5910-01-332-0781
NSN 5895-00-155-8581
NSN 6150-01-428-4496
NSN 5945-01-364-8496
NSN 5950-01-653-9127
NSN 5925-01-399-0613