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 5835-00-055-0953
NSN 5925-01-131-7724
NSN 6150-01-645-3322
NSN 6240-01-278-8802
NSN 6105-01-543-9596
NSN 2925-00-194-7407
NSN 5950-00-554-4870
NSN 5999-01-551-4659
NSN 5985-00-187-1982
NSN 5915-00-451-1486
NSN 2925-01-357-9021
NSN 6645-01-113-2525