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 5945-00-013-2041
NSN 5990-00-843-6825
NSN 5835-00-912-5656
NSN 6145-01-434-8152
NSN 6620-00-978-1906
NSN 5935-01-437-3167
NSN 5910-00-807-5118
NSN 5950-01-051-1887
NSN 6220-01-485-0333
NSN 5975-01-159-9315
NSN 5945-00-411-3690
NSN 6150-00-908-5305