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 6610-01-384-1587
NSN 2925-00-155-8091
NSN 5855-01-266-1645
NSN 5950-01-038-3102
NSN 7035-00-497-8784
NSN 5915-01-430-3958
NSN 5975-01-564-8756
NSN 5996-00-369-5299
NSN 5965-01-180-7070
NSN 5920-01-512-8101
NSN 5930-01-430-4308
NSN 6105-01-224-6438