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 5915-01-645-4809
NSN 6610-01-364-0294
NSN 5975-00-233-5964
NSN 5895-01-448-8901
NSN 5910-01-390-1480
NSN 2925-00-124-5465
NSN 6320-01-162-5977
NSN 5920-00-296-0454
NSN 6105-01-468-7150
NSN 6110-01-048-5885
NSN 5935-01-552-3333
NSN 5855-01-406-4821