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 6240-01-374-9367
NSN 6145-01-496-7543
NSN 5950-01-466-1980
NSN 6610-00-782-0761
NSN 6645-00-766-7935
NSN 5985-01-216-8993
NSN 5960-01-391-1308
NSN 5998-01-385-6036
NSN 6645-00-484-1992
NSN 6240-00-155-8728
NSN 6135-01-616-5983
NSN 5960-01-520-4615