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 5998-01-359-9025
NSN 5935-01-634-0668
NSN 5996-01-525-6712
NSN 6105-01-537-3920
NSN 6240-01-206-4148
NSN 5950-00-375-5367
NSN 6645-00-922-8312
NSN 5915-00-127-4305
NSN 5895-01-058-2236
NSN 6685-01-414-3596
NSN 5835-00-059-5854
NSN 6645-00-824-4612