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 5920-01-104-6198
NSN 5905-00-771-3444
NSN 6685-01-319-0999
NSN 5960-00-266-6741
NSN 5950-00-782-4875
NSN 5945-00-948-0664
NSN 6105-01-589-5907
NSN 5960-00-840-3656
NSN 6145-00-378-3836
NSN 5910-00-061-7831
NSN 5835-01-519-3834
NSN 6220-01-195-6637