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 6130-00-917-1364
NSN 5990-00-179-1871
NSN 5985-01-215-8993
NSN 5930-00-328-6243
NSN 5985-00-603-8056
NSN 5925-01-453-1110
NSN 5915-01-437-0950
NSN 5910-00-712-6170
NSN 6105-00-692-8709
NSN 5998-01-173-5341
NSN 7035-01-245-2858
NSN 5975-00-366-7440