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 5915-01-010-5657
NSN 5975-00-911-6340
NSN 6650-01-212-1618
NSN 5930-01-195-8441
NSN 5895-01-462-0027
NSN 5930-01-634-0659
NSN 5915-00-269-9252
NSN 6135-01-504-4744
NSN 5930-00-435-2369
NSN 5975-01-494-6333
NSN 5935-01-655-6069
NSN 5950-01-530-1980