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 6240-01-070-4914
NSN 5965-00-071-0562
NSN 5996-00-135-7367
NSN 5930-00-448-9302
NSN 5999-01-434-5670
NSN 5855-01-511-8946
NSN 5960-01-365-8752
NSN 5960-00-728-3459
NSN 5835-00-835-7838
NSN 7035-01-377-6255
NSN 5920-01-538-7374
NSN 5998-00-959-6885