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 6650-01-362-4289
NSN 5935-01-246-2283
NSN 2925-01-518-3453
NSN 5999-00-134-8506
NSN 6135-00-334-4500
NSN 5930-01-234-6264
NSN 5990-00-023-4163
NSN 5990-01-423-2219
NSN 5960-00-215-5884
NSN 6610-01-291-4173
NSN 5990-01-074-0055
NSN 5985-00-762-8658