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 7035-00-465-3298
NSN 5925-01-590-2513
NSN 6150-00-937-0883
NSN 6105-00-598-4910
NSN 6645-00-315-9254
NSN 5990-00-905-6472
NSN 6645-01-303-8336
NSN 5965-01-532-6779
NSN 5835-01-580-0446
NSN 6105-01-544-1544
NSN 5935-01-501-9209
NSN 5915-00-874-3624