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 5998-01-271-5891
NSN 2925-01-543-0073
NSN 5930-00-231-9795
NSN 5998-00-833-1534
NSN 6150-00-111-6774
NSN 5998-01-144-3876
NSN 5835-01-632-6627
NSN 5965-01-173-9106
NSN 6240-01-068-3491
NSN 6130-01-245-2463
NSN 5960-01-060-9248
NSN 6105-00-956-3902