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 6105-00-553-1458
NSN 5910-01-437-5202
NSN 5990-00-924-4167
NSN 5920-00-003-5845
NSN 7035-01-476-7316
NSN 5905-01-022-3928
NSN 5935-01-422-1114
NSN 5925-00-364-7969
NSN 5835-01-100-3265
NSN 5990-01-266-6016
NSN 6105-00-485-5939
NSN 5925-01-032-7780