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 6135-01-421-4855
NSN 5920-01-491-3509
NSN 5945-01-302-4328
NSN 5925-01-391-4684
NSN 4140-01-132-4527
NSN 6105-00-639-6857
NSN 4140-01-399-0330
NSN 5975-01-394-4152
NSN 5965-01-204-8505
NSN 5985-01-231-1040
NSN 5990-00-003-0569
NSN 6220-01-383-6502