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 5855-00-482-9876
NSN 5999-00-168-9398
NSN 5996-01-432-1145
NSN 5998-01-057-5938
NSN 2925-00-060-8292
NSN 5965-00-153-5216
NSN 2925-00-654-3206
NSN 7035-01-350-4247
NSN 5996-01-382-9710
NSN 6650-01-301-3959
NSN 5975-00-266-2029
NSN 5910-01-429-1059