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 5895-01-064-1346
NSN 5935-01-103-1797
NSN 5985-01-024-9640
NSN 6110-00-539-9543
NSN 4140-01-193-7705
NSN 5999-01-488-4326
NSN 6105-00-130-6961
NSN 5855-00-548-4742
NSN 6610-00-862-5901
NSN 6645-01-180-6219
NSN 6610-01-417-3011
NSN 6240-01-373-6417