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 5996-00-189-6054
NSN 6135-01-341-5324
NSN 5990-01-368-2604
NSN 5915-00-683-8248
NSN 5999-01-073-7531
NSN 6650-00-389-4111
NSN 5950-01-389-3703
NSN 5930-01-354-3920
NSN 5999-00-144-7698
NSN 5855-01-325-9507
NSN 5996-01-363-1096
NSN 6685-00-740-7256