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 5960-01-632-6576
NSN 6685-01-188-7379
NSN 6130-01-136-9903
NSN 5895-01-504-9003
NSN 5920-00-757-1900
NSN 5999-00-290-1860
NSN 6105-01-152-1510
NSN 6130-00-925-2303
NSN 5945-01-413-8787
NSN 5945-01-398-4740
NSN 5999-00-493-6000
NSN 6220-00-114-4953