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.)
Classification: Nuts of iron or steel
NSN 6645-00-543-6515
NSN 6220-01-421-0352
NSN 6110-01-328-8080
NSN 5996-01-590-7885
NSN 6620-01-521-9710
NSN 4140-01-432-1447
NSN 5998-01-161-5450
NSN 6150-01-111-2412
NSN 6320-01-462-3555
NSN 5999-00-383-7989
NSN 6150-01-506-5391
NSN 6645-00-150-6526