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 5985-01-160-8368
NSN 5915-01-484-9097
NSN 5960-00-369-8018
NSN 5930-01-463-2153
NSN 5855-00-466-2309
NSN 5975-00-194-4998
NSN 5930-01-556-7138
NSN 5996-00-321-5418
NSN 5998-01-585-2403
NSN 5925-01-357-7180
NSN 6110-01-258-4300
NSN 6610-01-593-2428