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 5965-00-150-1144
NSN 5835-01-295-2431
NSN 5985-01-200-1020
NSN 5999-01-499-7076
NSN 5920-00-196-3631
NSN 5999-00-947-6046
NSN 6110-00-877-2940
NSN 6610-01-218-2024
NSN 6220-01-271-2678
NSN 6145-00-351-4539
NSN 5950-00-302-3986
NSN 7035-00-535-8109