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 5895-00-353-1795
NSN 6645-01-518-4296
NSN 6110-00-352-0605
NSN 6645-01-292-9778
NSN 7035-00-703-3535
NSN 5930-01-353-7821
NSN 5855-00-446-5921
NSN 4140-00-182-9158
NSN 5930-01-541-4820
NSN 4140-00-351-7085
NSN 6645-00-084-3859
NSN 5895-01-601-3917