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 6135-00-295-2614
NSN 5925-01-188-6090
NSN 6150-00-466-9883
NSN 6145-00-155-5297
NSN 5915-01-446-1016
NSN 6320-00-116-3658
NSN 6135-00-913-2062
NSN 6645-00-943-9063
NSN 6150-01-424-6096
NSN 6105-00-717-2191
NSN 5996-00-832-5285
NSN 5895-01-408-9913