Material steel
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 7035-01-011-3760
NSN 5935-01-309-8627
NSN 6145-01-520-8851
NSN 5960-01-462-6267
NSN 6240-01-201-5435
NSN 5999-01-296-4610
NSN 6110-00-816-7444
NSN 5915-01-513-2531
NSN 5910-01-542-2926
NSN 5935-01-272-6258
NSN 2925-01-083-3986
NSN 5985-00-993-8344