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 5985-01-007-6652
NSN 6650-01-167-5604
NSN 6645-00-521-0353
NSN 5975-01-409-2948
NSN 4140-01-284-3198
NSN 6645-01-563-5141
NSN 5996-00-392-7626
NSN 5998-01-231-2449
NSN 5960-01-278-9394
NSN 6685-01-074-9443
NSN 5996-01-628-8624
NSN 5925-01-337-8751