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 5945-01-144-1566
NSN 5998-01-056-6496
NSN 2925-01-279-1558
NSN 5996-01-271-7288
NSN 5935-01-105-8216
NSN 5895-01-176-3420
NSN 6620-00-565-9793
NSN 6150-01-463-5072
NSN 6320-01-526-5534
NSN 7035-01-348-5153
NSN 5998-01-505-7168
NSN 5905-01-599-3258