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 6320-01-576-6310
NSN 6650-00-520-5785
NSN 5975-01-451-4799
NSN 5990-01-512-9129
NSN 5996-01-323-6008
NSN 5915-01-420-9537
NSN 6110-01-227-5465
NSN 5930-01-257-0543
NSN 6610-00-141-7000
NSN 2925-01-596-9448
NSN 5985-01-462-6312
NSN 2925-01-423-8141