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 5910-00-089-2605
NSN 5920-01-619-5453
NSN 6650-01-555-8819
NSN 5925-01-415-0261
NSN 5999-01-523-4134
NSN 6240-01-485-7391
NSN 5920-00-835-7670
NSN 7035-00-868-2640
NSN 5855-01-355-8729
NSN 5965-00-099-0698
NSN 6110-01-198-6154
NSN 6650-00-442-0567