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 6130-01-349-3325
NSN 6685-00-852-4824
NSN 6150-01-434-5137
NSN 5985-01-079-8079
NSN 6110-01-550-9762
NSN 5910-01-261-6749
NSN 5930-01-552-3912
NSN 5855-00-411-8688
NSN 5895-01-324-7957
NSN 6685-00-899-1861
NSN 6685-01-595-6905
NSN 5965-01-504-1051