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 5910-01-571-8500
NSN 5965-00-111-2073
NSN 5855-01-400-1590
NSN 5910-01-142-2688
NSN 6135-00-676-5807
NSN 6130-01-564-4335
NSN 6150-01-487-3026
NSN 5905-01-361-8825
NSN 5930-01-482-3110
NSN 6105-01-422-1835
NSN 5915-00-644-5735
NSN 6105-00-523-0403