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 6620-01-631-5936
NSN 5930-01-481-4233
NSN 6145-00-419-9943
NSN 5835-01-080-3678
NSN 5835-01-104-1299
NSN 7035-01-123-8723
NSN 5920-01-367-5791
NSN 6110-00-185-2021
NSN 5960-01-435-1167
NSN 5998-01-212-9255
NSN 6320-01-624-0193
NSN 5975-01-545-5453