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 5925-01-528-7786
NSN 5998-01-336-4957
NSN 5910-00-035-5534
NSN 6145-01-140-1538
NSN 6105-00-581-9472
NSN 5935-01-537-1690
NSN 5915-01-412-2112
NSN 5915-01-469-6236
NSN 4140-01-546-1794
NSN 6105-00-189-0515
NSN 5950-00-597-8644
NSN 6685-01-095-9129