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 6685-01-613-3604
NSN 6145-00-166-7950
NSN 5920-01-423-8595
NSN 6610-01-551-1895
NSN 5999-01-501-5783
NSN 6650-00-809-1817
NSN 5996-00-580-4129
NSN 6110-00-678-1728
NSN 5905-01-266-1311
NSN 5960-01-391-8860
NSN 6685-01-556-4246
NSN 6685-00-296-0392