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 5950-01-235-6699
NSN 5920-01-328-2040
NSN 5998-00-946-2306
NSN 6110-01-381-5311
NSN 6685-01-023-8007
NSN 6150-00-262-0477
NSN 5925-01-265-7749
NSN 6220-00-643-4045
NSN 6645-01-331-5674
NSN 6110-00-299-3553
NSN 5920-01-444-4082
NSN 5950-00-632-0209