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 5895-00-209-9766
NSN 6610-00-536-4977
NSN 5895-01-494-2437
NSN 5935-01-446-6136
NSN 5950-00-717-5405
NSN 5905-01-353-7339
NSN 5960-00-445-3954
NSN 5960-00-179-0737
NSN 5835-01-481-4204
NSN 6645-00-276-1123
NSN 5998-01-625-8070
NSN 5915-01-011-4750