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 6110-00-969-7065
NSN 5895-01-338-3838
NSN 5990-01-463-2279
NSN 6645-01-420-8360
NSN 6145-01-304-1357
NSN 6320-01-618-7800
NSN 5855-00-943-3894
NSN 6610-00-425-7684
NSN 6135-01-422-1440
NSN 5999-01-054-2954
NSN 6320-01-225-9963
NSN 5855-01-634-0259