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 5910-00-610-5758
NSN 5998-00-056-2698
NSN 5925-01-242-8723
NSN 5835-01-067-0075
NSN 2925-01-022-8332
NSN 7035-01-348-5153
NSN 5999-01-215-1236
NSN 7035-01-231-2450
NSN 2925-01-607-4340
NSN 5925-01-634-0664
NSN 5996-00-119-5278
NSN 6150-01-142-4684