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 6610-00-208-5318
NSN 5930-01-253-4328
NSN 5965-00-693-8829
NSN 5996-01-440-9660
NSN 6130-01-292-6601
NSN 5930-01-497-4515
NSN 5835-01-447-2544
NSN 5835-00-705-7645
NSN 6240-01-336-4796
NSN 5999-00-247-1352
NSN 5905-00-185-3864
NSN 6620-01-494-3739