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 5855-01-654-8603
NSN 5930-01-054-3229
NSN 6105-00-493-3316
NSN 6105-01-175-3412
NSN 5998-01-453-1162
NSN 5910-01-644-4177
NSN 6320-01-592-6248
NSN 6105-00-225-8745
NSN 5835-01-442-6482
NSN 6135-00-764-8680
NSN 6135-00-885-6003
NSN 6610-01-459-1951