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 5985-01-217-3519
NSN 5925-00-720-1354
NSN 5835-01-568-7796
NSN 5998-00-063-6367
NSN 5920-00-952-4080
NSN 5935-01-042-0308
NSN 6220-00-131-2095
NSN 6150-00-620-0484
NSN 6145-01-202-8478
NSN 6220-01-268-1541
NSN 5960-01-274-7628
NSN 5999-00-078-2386