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 5998-01-609-6689
NSN 5975-01-023-6897
NSN 6320-00-270-8222
NSN 5985-01-537-0950
NSN 5925-00-031-4108
NSN 5990-01-219-2703
NSN 2925-00-918-0859
NSN 5895-00-114-3418
NSN 5998-01-028-4416
NSN 6130-01-302-0371
NSN 5835-01-447-2544
NSN 5920-01-438-3640