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 5855-01-267-2751
NSN 5990-00-309-0023
NSN 5960-00-171-9575
NSN 5950-01-197-7625
NSN 4140-01-441-0283
NSN 5985-00-929-9969
NSN 5915-01-317-6547
NSN 5920-00-269-6178
NSN 6610-01-219-6836
NSN 5895-00-269-3848
NSN 5855-01-286-9928
NSN 5945-00-864-3726