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 6145-01-399-8414
NSN 7035-01-477-2818
NSN 6620-01-238-9224
NSN 5835-00-707-6266
NSN 5996-01-465-2305
NSN 5945-01-141-6697
NSN 5835-00-483-3364
NSN 5999-01-051-3844
NSN 6645-00-684-3424
NSN 5960-00-185-7244
NSN 6610-01-479-4538
NSN 5910-00-421-2393