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 5855-01-631-5051
NSN 2925-00-806-7972
NSN 4140-01-212-3113
NSN 6240-01-329-4979
NSN 5835-01-065-5281
NSN 6135-00-351-8606
NSN 6320-01-354-6204
NSN 5930-01-211-6894
NSN 5920-01-383-5963
NSN 5985-01-359-2605
NSN 5965-00-228-8336
NSN 5915-01-515-8454