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 5945-01-651-8654
NSN 6105-00-357-1801
NSN 5925-01-420-6211
NSN 2925-01-325-3974
NSN 6685-01-079-9682
NSN 5999-00-534-7701
NSN 5999-00-269-5320
NSN 5935-01-311-6819
NSN 5985-00-674-3203
NSN 6135-01-238-2878
NSN 6145-01-583-1815
NSN 6145-00-985-3284