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 5920-01-224-7946
NSN 5985-00-164-5479
NSN 5998-01-414-7244
NSN 6685-01-227-2621
NSN 6110-01-418-0802
NSN 5999-01-143-5895
NSN 5895-00-553-8345
NSN 6130-01-530-1991
NSN 6135-01-449-0625
NSN 2925-01-113-6904
NSN 5925-01-050-8410
NSN 4140-01-224-8715