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 5975-00-229-0898
NSN 6645-00-585-5932
NSN 5996-01-558-6043
NSN 5950-00-190-4764
NSN 6135-00-416-2898
NSN 6240-01-293-9068
NSN 6320-00-468-8421
NSN 5998-00-819-1254
NSN 6320-01-618-7800
NSN 6610-00-313-0660
NSN 6220-00-785-1713
NSN 5915-00-248-5824