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 2925-00-275-1807
NSN 2925-01-368-5773
NSN 5965-01-392-9343
NSN 6240-00-793-7969
NSN 5930-01-181-7081
NSN 5925-01-187-0695
NSN 5855-01-224-7975
NSN 6620-00-394-1812
NSN 5925-00-009-9818
NSN 5975-01-419-6733
NSN 5835-00-198-4936
NSN 6110-01-278-9835