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 6645-01-160-7707
NSN 5925-00-924-9596
NSN 6620-00-383-8740
NSN 5990-00-085-4299
NSN 6135-01-566-1034
NSN 5855-01-398-9548
NSN 6685-00-772-8853
NSN 5985-00-532-1062
NSN 6145-01-276-6735
NSN 6150-01-417-2643
NSN 6105-01-195-4847
NSN 6135-00-803-3012