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 6105-01-260-1303
NSN 6620-01-094-6549
NSN 5960-01-641-5493
NSN 6150-00-162-5503
NSN 6610-01-207-0045
NSN 4140-00-283-6843
NSN 6220-00-451-8760
NSN 5835-01-209-6410
NSN 5915-01-147-4830
NSN 5975-01-603-0945
NSN 5990-01-034-4532
NSN 6610-01-088-1810