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 6130-00-052-2143
NSN 4140-00-336-1728
NSN 7035-01-332-3496
NSN 5855-01-109-6433
NSN 6130-00-875-1941
NSN 6110-00-602-2225
NSN 6130-00-553-1946
NSN 5895-01-031-4097
NSN 5990-00-247-0975
NSN 6105-01-212-9245
NSN 5960-00-080-3700
NSN 6610-01-581-8682