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 6320-01-177-3192
NSN 5925-01-406-6135
NSN 5945-01-626-6363
NSN 5950-00-233-8338
NSN 5925-01-450-7047
NSN 5990-00-105-7831
NSN 5960-01-599-9821
NSN 5855-01-498-4949
NSN 2925-01-464-6127
NSN 6240-00-738-6822
NSN 7035-00-557-5570
NSN 6135-00-793-1809