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 6220-00-657-2098
NSN 6110-01-449-2685
NSN 5999-01-433-5977
NSN 5975-01-382-0634
NSN 6105-00-145-7233
NSN 5835-01-242-9806
NSN 6685-00-843-2211
NSN 6610-01-464-3037
NSN 6620-01-262-7317
NSN 6240-01-494-9861
NSN 6610-00-208-5318
NSN 5998-01-435-8121