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 5965-00-275-0491
NSN 5965-00-247-4886
NSN 5905-00-428-0989
NSN 5935-01-218-0839
NSN 6105-00-243-9278
NSN 6135-01-222-0703
NSN 5855-00-862-3345
NSN 6110-01-132-5997
NSN 5950-00-591-5195
NSN 5998-01-364-0243
NSN 2925-01-021-7563
NSN 5975-00-869-2361