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 6105-00-851-2998
NSN 6610-00-057-3601
NSN 4140-00-952-4047
NSN 5999-01-182-7332
NSN 2925-00-918-0859
NSN 2925-00-330-7316
NSN 5985-01-557-5371
NSN 6145-00-951-9971
NSN 5999-00-950-9416
NSN 2925-01-387-0870
NSN 5999-00-197-8244
NSN 5975-01-361-5641