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 5905-00-010-3012
NSN 5920-01-567-4634
NSN 6610-00-992-3838
NSN 5905-01-085-6405
NSN 6105-01-248-4671
NSN 6620-00-990-3385
NSN 6240-00-138-9124
NSN 5945-00-957-4944
NSN 5999-01-074-4630
NSN 5930-01-254-3819
NSN 5855-01-115-9014
NSN 7035-00-830-1235