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 5905-01-317-2469
NSN 5965-01-269-4338
NSN 6105-01-464-4251
NSN 6110-01-230-4770
NSN 5925-01-095-6397
NSN 5990-01-195-3077
NSN 6105-00-300-5643
NSN 6220-00-670-7692
NSN 5950-01-571-5609
NSN 6145-00-166-3835
NSN 6610-00-191-5317
NSN 5965-00-484-8236