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 5915-01-230-2929
NSN 6150-00-078-7064
NSN 2925-01-527-8745
NSN 6130-01-211-0224
NSN 5998-00-493-7605
NSN 5855-01-223-0833
NSN 5975-01-215-1205
NSN 6620-01-591-4031
NSN 5920-00-903-8503
NSN 5835-00-372-3736
NSN 6130-01-190-5470
NSN 5920-01-472-3583