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 5925-01-294-4718
NSN 5996-01-434-5657
NSN 6150-01-389-1978
NSN 6220-00-205-2040
NSN 6620-01-382-2921
NSN 5996-01-542-8611
NSN 5998-01-106-3813
NSN 5999-01-067-8368
NSN 5985-01-128-4619
NSN 5925-00-155-2587
NSN 5895-00-218-1355
NSN 5915-00-716-7165