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 6650-01-451-1372
NSN 5975-01-605-6122
NSN 5990-01-147-5225
NSN 5835-00-415-6421
NSN 6685-00-153-3914
NSN 6145-01-214-8037
NSN 5925-01-659-7132
NSN 5905-01-271-4566
NSN 5905-01-286-7953
NSN 6105-00-174-8245
NSN 6610-01-603-0703
NSN 5998-01-435-3871