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 6130-01-419-3297
NSN 6645-00-906-1769
NSN 6645-01-331-5674
NSN 7035-01-377-6255
NSN 5999-01-416-4395
NSN 5895-01-320-6747
NSN 6150-00-449-7862
NSN 6610-00-432-5774
NSN 5895-00-905-1154
NSN 6650-01-112-0453
NSN 5950-01-629-5475
NSN 5999-01-614-5906