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 6130-00-811-3799
NSN 2925-01-541-7217
NSN 6685-01-280-4352
NSN 6130-00-079-9342
NSN 6150-01-419-5500
NSN 6110-00-035-8794
NSN 5895-00-632-6451
NSN 5999-01-463-9039
NSN 5835-01-071-6376
NSN 6130-00-679-1873
NSN 5998-01-481-3907
NSN 5950-00-486-1691