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 6685-01-630-4270
NSN 6650-01-168-8451
NSN 5965-01-468-8405
NSN 6105-01-436-8571
NSN 5925-00-545-8022
NSN 6135-00-057-2005
NSN 5990-01-321-2997
NSN 2925-01-448-2880
NSN 5855-01-400-1590
NSN 6650-00-231-7843
NSN 6610-01-398-8815
NSN 5930-01-596-1458