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 5895-01-449-8701
NSN 6320-01-411-7469
NSN 5950-00-967-2434
NSN 5935-00-067-6708
NSN 5999-01-646-0792
NSN 5925-00-833-8291
NSN 6610-00-478-7071
NSN 5975-01-164-0320
NSN 5998-01-420-4087
NSN 6130-01-100-1875
NSN 5930-00-882-8630
NSN 6145-01-062-1598