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 6135-01-562-6582
NSN 5975-01-374-6988
NSN 6320-01-530-4870
NSN 6650-00-597-7313
NSN 5935-01-469-6810
NSN 5855-01-147-6024
NSN 5905-00-555-1899
NSN 5996-01-534-9995
NSN 2925-01-633-4048
NSN 5935-01-292-9154
NSN 6320-00-823-2015
NSN 6240-01-182-1895