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 5998-01-492-9899
NSN 5985-01-383-8346
NSN 6150-01-213-0853
NSN 5985-01-394-6680
NSN 6220-01-413-3799
NSN 5985-00-850-1524
NSN 2925-01-236-3547
NSN 6240-01-397-8713
NSN 5950-01-358-3140
NSN 6610-00-131-2533
NSN 5905-01-273-9045
NSN 5998-01-127-5209