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 6220-01-582-3508
NSN 5855-00-832-9341
NSN 6620-00-170-5296
NSN 5835-01-286-6499
NSN 6150-01-126-3527
NSN 5905-01-168-3915
NSN 6220-01-646-3937
NSN 2925-01-179-2648
NSN 5910-01-049-9960
NSN 6110-01-144-4376
NSN 6110-00-041-0090
NSN 5950-01-365-7399