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 5910-01-261-6357
NSN 6240-00-326-2966
NSN 5965-00-267-4173
NSN 7035-00-408-8170
NSN 6240-01-147-5424
NSN 6110-01-430-7238
NSN 5895-01-430-1865
NSN 6645-01-445-4673
NSN 5960-01-248-1105
NSN 6685-01-274-4659
NSN 6240-00-194-7924
NSN 5930-01-197-8115