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 6320-01-543-3238
NSN 5930-00-070-4116
NSN 5996-00-456-0895
NSN 6645-01-506-8012
NSN 5935-01-391-6818
NSN 5930-01-437-9011
NSN 5855-01-575-3154
NSN 6110-01-607-5867
NSN 6150-01-598-7649
NSN 6135-01-067-8331
NSN 5910-01-573-5278
NSN 5855-00-944-0949