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 6645-01-629-0847
NSN 6145-01-168-1070
NSN 5990-01-053-5115
NSN 5965-01-196-1526
NSN 5925-00-603-8077
NSN 2925-01-465-3437
NSN 6220-01-500-9126
NSN 6650-01-203-8263
NSN 6130-00-635-9853
NSN 5835-01-493-1826
NSN 5990-01-200-7460
NSN 6135-01-359-5798