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 6135-00-683-0536
NSN 5855-00-832-9341
NSN 5950-01-470-6607
NSN 6650-01-287-0096
NSN 6150-01-381-4360
NSN 5965-01-124-1817
NSN 6645-00-608-7756
NSN 5960-01-061-9166
NSN 6240-01-293-4819
NSN 6320-00-343-1798
NSN 5935-00-147-0950
NSN 5950-01-067-7948