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 6685-01-464-8406
NSN 5950-01-421-4138
NSN 4140-01-653-7856
NSN 6110-00-099-7113
NSN 6650-00-990-9541
NSN 6650-01-205-8578
NSN 5925-01-047-4511
NSN 6650-01-044-9860
NSN 6620-01-484-1249
NSN 5855-01-050-0861
NSN 6320-01-512-2031
NSN 5925-01-197-8789