Square nut; heavy
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 6220-00-682-8292
NSN 5895-01-220-6354
NSN 5835-01-478-0157
NSN 6105-01-649-3117
NSN 5905-01-543-1117
NSN 6645-01-594-9966
NSN 5998-01-435-9715
NSN 6130-01-113-8998
NSN 6650-01-312-3467
NSN 5990-00-009-3291
NSN 5999-01-168-9730
NSN 6150-00-307-2652