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 5975-00-081-2171
NSN 5895-01-147-6310
NSN 5835-01-504-0837
NSN 5975-00-644-4972
NSN 6145-01-444-1668
NSN 6105-00-891-9768
NSN 5895-01-177-7395
NSN 5935-01-040-3877
NSN 5895-01-103-2408
NSN 6685-01-085-5176
NSN 6105-00-920-6638
NSN 5910-01-619-2914