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 5975-01-196-4990
NSN 5835-01-362-1946
NSN 5990-01-298-3152
NSN 6135-01-278-9717
NSN 6645-01-391-6492
NSN 5996-00-840-5246
NSN 5895-01-123-2352
NSN 6240-01-270-5998
NSN 5999-01-042-1538
NSN 6685-00-507-8819
NSN 6145-01-466-9554
NSN 5998-01-594-4673