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 6240-01-633-9357
NSN 6685-01-007-0259
NSN 4140-01-519-9343
NSN 5920-01-032-4756
NSN 5945-01-166-5239
NSN 6145-00-842-7350
NSN 5998-00-092-5937
NSN 5950-01-081-0632
NSN 6240-01-550-8991
NSN 5835-01-318-5268
NSN 5935-01-284-7400
NSN 5950-01-654-0634