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 5915-01-304-6915
NSN 5895-01-562-6631
NSN 6220-00-242-1492
NSN 5915-00-753-7553
NSN 6135-01-423-7502
NSN 6650-01-024-9554
NSN 5920-01-130-3189
NSN 6105-01-292-2220
NSN 6645-01-130-5581
NSN 5965-01-178-0876
NSN 6130-01-607-6305
NSN 2925-01-330-2988