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 5925-00-088-8312
NSN 6220-00-149-0977
NSN 5975-00-889-7634
NSN 2925-01-590-8691
NSN 6220-00-111-3188
NSN 6620-01-253-0374
NSN 6105-01-384-4986
NSN 6610-01-243-8506
NSN 6685-01-445-1055
NSN 6645-01-586-3434
NSN 5930-01-322-8575
NSN 5935-01-634-0668