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 5960-01-413-3877
NSN 5910-00-898-1214
NSN 6240-01-196-0497
NSN 6620-01-290-2973
NSN 5985-01-367-2842
NSN 5975-01-513-4184
NSN 5996-01-656-4924
NSN 5998-01-476-5083
NSN 6320-01-236-9562
NSN 5935-01-118-2101
NSN 6130-01-278-9831
NSN 6620-01-100-8899