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 5950-01-227-5363
NSN 5835-01-338-5176
NSN 5990-01-074-6549
NSN 5930-00-387-2108
NSN 6240-01-379-5779
NSN 6685-01-311-5435
NSN 5945-01-392-1068
NSN 6645-01-430-2420
NSN 6650-01-050-8680
NSN 6105-01-133-5508
NSN 6240-01-307-0269
NSN 6150-01-193-8997