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 5950-01-218-8951
NSN 5895-01-290-4499
NSN 6130-00-170-4844
NSN 5935-01-183-9761
NSN 5895-00-518-0217
NSN 5920-01-609-4080
NSN 6645-01-119-3496
NSN 6130-01-450-7141
NSN 5990-00-152-3929
NSN 7035-01-027-8569
NSN 5996-01-239-4120
NSN 4140-01-147-8525