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 5895-01-569-0432
NSN 5925-00-960-5214
NSN 5910-01-429-8931
NSN 5905-01-423-5172
NSN 6105-01-122-0421
NSN 6650-00-250-5183
NSN 5910-00-900-6558
NSN 5895-00-327-8805
NSN 5960-01-583-4737
NSN 5965-01-131-9778
NSN 6610-01-573-5949
NSN 5998-01-287-7497