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 5895-01-357-7539
NSN 5930-00-251-7815
NSN 5925-01-605-7767
NSN 5855-01-337-0245
NSN 6685-01-223-6146
NSN 5999-01-488-3418
NSN 5920-01-088-8312
NSN 5990-01-430-3152
NSN 5985-01-019-6168
NSN 5915-00-171-1812
NSN 5895-01-037-2536
NSN 6620-01-247-8535