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 5925-01-271-7652
NSN 5998-01-180-6591
NSN 5935-01-471-6449
NSN 6620-00-009-0904
NSN 5960-00-115-2199
NSN 5985-00-507-8485
NSN 6685-01-586-4565
NSN 5910-00-764-2177
NSN 6150-01-634-0575
NSN 6135-01-643-9081
NSN 6135-01-463-2445
NSN 5945-01-553-0632