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 5960-00-682-3598
NSN 5925-01-104-7975
NSN 6620-00-780-7786
NSN 5895-00-200-5607
NSN 6130-01-433-2449
NSN 6145-01-634-0388
NSN 6220-01-619-5240
NSN 4140-00-205-6491
NSN 6110-00-129-8714
NSN 5960-01-215-0992
NSN 5975-01-069-4689
NSN 6620-00-443-7587