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 5985-00-785-6872
NSN 5905-01-634-0595
NSN 6320-01-631-7828
NSN 6620-01-197-8207
NSN 6150-01-433-8350
NSN 5960-01-243-0007
NSN 6130-01-292-2763
NSN 5999-00-420-0495
NSN 6620-00-483-1961
NSN 6645-01-124-6277
NSN 5835-01-225-3080
NSN 6150-00-480-5978