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 6145-01-099-9114
NSN 6320-00-194-4252
NSN 5950-01-653-3484
NSN 5990-01-292-6000
NSN 6150-01-583-6493
NSN 6145-00-567-3255
NSN 5985-01-521-0338
NSN 6240-01-633-9357
NSN 5960-01-350-5332
NSN 4140-00-054-6467
NSN 5935-01-121-6303
NSN 6110-01-421-4449