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 6110-00-840-6560
NSN 6110-01-023-8496
NSN 5835-00-484-1529
NSN 6110-01-464-0236
NSN 5945-01-406-3200
NSN 4140-01-014-3454
NSN 5950-00-850-8716
NSN 7035-01-071-0197
NSN 5925-01-381-2528
NSN 4140-01-231-8578
NSN 5895-01-240-0569
NSN 5998-01-545-4722