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 5895-01-361-4555
NSN 5960-00-441-0832
NSN 5960-00-114-1828
NSN 5915-01-561-8253
NSN 5835-01-338-5176
NSN 5930-01-357-1880
NSN 5945-00-529-6058
NSN 5945-00-568-0116
NSN 6135-01-150-5382
NSN 6135-01-255-9129
NSN 5950-00-683-8304
NSN 5999-01-417-2123