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 5965-01-227-4517
NSN 5835-00-711-3371
NSN 5895-01-534-9914
NSN 5999-01-106-4627
NSN 6220-00-934-1509
NSN 5905-00-816-8002
NSN 6620-00-312-2036
NSN 5835-00-505-2516
NSN 6110-01-300-9969
NSN 5855-00-256-5562
NSN 5950-01-634-0677
NSN 5855-01-093-3080