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 6610-01-420-7817
NSN 6135-01-140-8201
NSN 6610-00-492-8335
NSN 5950-01-426-8810
NSN 6130-01-416-6266
NSN 6220-00-615-2168
NSN 5965-00-482-7945
NSN 6220-00-682-8292
NSN 5965-01-388-1379
NSN 5996-00-987-9080
NSN 6320-01-600-5808
NSN 5999-01-350-3180