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 5975-00-224-4342
NSN 6220-01-031-9505
NSN 5945-01-148-6785
NSN 5985-00-186-2927
NSN 5925-00-261-8166
NSN 5925-00-889-4990
NSN 5935-00-240-8240
NSN 6620-01-408-4464
NSN 6240-01-435-6505
NSN 5925-00-262-6087
NSN 7035-00-337-8745
NSN 6150-01-015-0519