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 7035-01-276-0355
NSN 5998-01-495-3460
NSN 5920-01-013-8594
NSN 7035-01-078-0155
NSN 5835-00-473-1010
NSN 5915-01-552-3324
NSN 6110-00-420-1357
NSN 5855-01-323-5394
NSN 5905-00-887-6128
NSN 5905-01-574-2815
NSN 6610-01-246-4164
NSN 5999-00-737-4722