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 5855-01-656-6808
NSN 6105-00-957-8237
NSN 5965-01-448-9585
NSN 2925-01-008-5696
NSN 5915-01-456-7988
NSN 6110-00-958-3794
NSN 6320-01-332-7020
NSN 6220-01-391-6084
NSN 5999-01-363-0282
NSN 6220-01-033-8656
NSN 5965-01-633-8849
NSN 6150-01-505-1531