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 5960-00-886-6555
NSN 2925-01-516-0124
NSN 5965-01-474-4000
NSN 6320-00-725-0754
NSN 5998-00-433-1644
NSN 6220-00-159-2509
NSN 5895-01-232-0043
NSN 5930-01-501-2651
NSN 2925-01-243-0328
NSN 6620-01-158-9412
NSN 7035-01-452-9086
NSN 6220-01-158-5956