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 6130-01-230-8391
NSN 5835-01-473-6187
NSN 5925-01-411-6028
NSN 6320-01-289-0946
NSN 6645-00-269-2764
NSN 6105-01-067-8377
NSN 2925-01-261-0701
NSN 6105-00-008-6140
NSN 6105-01-315-1873
NSN 6610-01-469-2408
NSN 5999-01-513-7903
NSN 5965-01-260-5781