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 6610-01-448-0982
NSN 5855-00-237-4088
NSN 5998-00-100-0491
NSN 6620-01-364-0195
NSN 5895-00-221-1315
NSN 5935-01-424-7248
NSN 5910-01-568-4483
NSN 5915-01-067-9870
NSN 5905-01-433-2524
NSN 5930-00-155-5917
NSN 5905-01-335-4878
NSN 5910-01-387-3033