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 7035-01-396-3343
NSN 6650-00-202-4540
NSN 5950-01-352-5230
NSN 6645-01-400-2119
NSN 6135-01-014-9755
NSN 5996-00-248-7061
NSN 6620-01-502-9104
NSN 5945-01-406-7700
NSN 5950-00-128-6266
NSN 6620-01-119-9239
NSN 5965-01-023-9359
NSN 5930-01-643-7633