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 5905-01-059-8513
NSN 5895-01-529-3097
NSN 5990-01-254-3197
NSN 5855-01-023-3727
NSN 5996-00-450-4807
NSN 6145-00-284-1495
NSN 6650-01-270-0318
NSN 5855-00-361-0167
NSN 5965-00-422-5415
NSN 5965-01-041-4978
NSN 5985-00-781-7278
NSN 6135-00-603-4859