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 6105-00-179-9863
NSN 6135-00-951-3426
NSN 5965-00-952-8842
NSN 5965-01-391-1703
NSN 5910-00-231-7726
NSN 5915-01-428-4187
NSN 6105-00-935-8736
NSN 5950-01-291-7713
NSN 6220-00-111-3188
NSN 6220-00-602-7756
NSN 5935-00-420-3403
NSN 5950-00-349-7045