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 6105-01-559-0176
NSN 5935-01-111-5649
NSN 5930-01-550-4628
NSN 6610-01-228-8883
NSN 5965-00-529-0602
NSN 5910-01-244-3997
NSN 5999-00-225-8960
NSN 5910-01-579-4145
NSN 5945-01-483-1316
NSN 6105-00-239-2166
NSN 6645-01-300-5054
NSN 5945-01-081-1694