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 5895-01-451-0035
NSN 5985-01-317-3143
NSN 5895-01-581-0407
NSN 5998-00-368-9396
NSN 6130-01-128-3058
NSN 6220-01-390-3334
NSN 7035-01-364-0286
NSN 6645-00-376-4829
NSN 6620-00-974-7595
NSN 6650-00-372-6035
NSN 5945-01-560-9360
NSN 5925-00-888-5444