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 6220-01-124-2486
NSN 5895-01-377-8575
NSN 5950-01-576-5895
NSN 5960-01-425-1454
NSN 6220-01-398-8937
NSN 6610-00-285-5366
NSN 2925-01-544-3018
NSN 5930-00-911-7766
NSN 5935-00-812-2903
NSN 5935-01-139-6927
NSN 5895-00-875-6035
NSN 5945-00-397-5806