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 5975-01-207-8190
NSN 6220-00-132-6854
NSN 5910-01-428-9349
NSN 5910-00-318-8766
NSN 5895-00-084-3878
NSN 6150-00-079-1101
NSN 5835-01-469-6706
NSN 5910-01-622-5674
NSN 4140-00-106-6780
NSN 5965-01-142-8044
NSN 6685-01-634-0611
NSN 6240-01-183-0893