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 6220-00-635-8818
NSN 5975-01-168-2817
NSN 5835-01-264-8782
NSN 5915-00-688-9124
NSN 4140-01-396-0115
NSN 6610-01-041-1880
NSN 5835-01-024-9249
NSN 6110-01-135-2027
NSN 5985-01-074-8896
NSN 6610-01-383-4458
NSN 5915-01-600-1058
NSN 6645-01-364-1845