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 5915-01-258-5799
NSN 6240-01-186-3273
NSN 2925-00-705-5180
NSN 5996-00-583-0607
NSN 5945-00-987-0058
NSN 5905-00-450-6332
NSN 6150-01-381-4876
NSN 5835-01-583-8358
NSN 5895-00-709-2617
NSN 6130-01-573-0995
NSN 6620-01-466-4436
NSN 5975-01-507-3236