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 6150-01-634-0575
NSN 5930-01-197-5575
NSN 5990-01-189-9338
NSN 5915-01-555-8852
NSN 6105-01-577-0014
NSN 5920-01-125-6469
NSN 4140-01-113-0272
NSN 6240-01-513-1719
NSN 6105-01-330-9482
NSN 6685-01-455-8172
NSN 5950-01-400-3463
NSN 6610-00-186-9180