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 5999-01-054-4359
NSN 5990-01-407-6615
NSN 5920-01-116-6630
NSN 6650-00-315-2397
NSN 5990-01-142-0538
NSN 5975-01-505-8857
NSN 7035-00-703-3535
NSN 4140-00-179-3977
NSN 6240-01-439-7399
NSN 6220-01-003-9126
NSN 6105-00-085-2178
NSN 5910-00-506-6342