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 5950-00-112-8978
NSN 5930-00-148-4808
NSN 5855-00-411-8688
NSN 6320-01-347-2638
NSN 5960-01-098-8437
NSN 6150-00-580-0511
NSN 5915-01-351-5656
NSN 5998-01-415-7241
NSN 6110-01-338-1621
NSN 5998-01-623-2391
NSN 5895-01-653-0833
NSN 7035-00-312-3055